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Related terms:Narrower terms:Used for:- Freethought
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Filed under: Free thought- The Value of Free Thought: How to Become a Truth-Seeker and Break the Chains of Mental Slavery (Girard, KS: Haldeman-Julius Publications, c1944), by Bertrand Russell (page images at HathiTrust; US access only)
- Ingersoll the Magnificent (New York: Freethought Press Association, 1957), by Joseph Lewis and Robert Green Ingersoll (page images at HathiTrust)
- 400 Years of Freethought (New York: Truth Seeker Co., 1894), by Samuel P. Putnam
- A Defence of Free-Thinking in Mathematics, by George Berkeley (in Ireland)
- A Few Words About the Devil, and Other Biographical Sketches and Essays (New York: A. K. Butts and Co., 1874), by Charles Bradlaugh
- Flowers of Freethought, by G. W. Foote (HTML at Freethought Archives)
- Is the Bible Worth Reading? And Other Essays, by L. K. Washburn (HTML at infidels.org)
- Men, Women and Gods, and Other Lectures, by Helen H. Gardener (HTML at infidels.org)
- The Mistakes of Jesus, by William Floyd (HTML at infidels.org)
- The Nemesis of Faith (London: J. Chapman, 1849), by James Anthony Froude (multiple formats at archive.org)
- Searching for Truth (second edition; New York: Peter Eckler, c1902), by George Otis Draper (multiple formats at archive.org)
- Some Remarks on Mr. Walton's Appendix Which He Wrote in Reply to the Author of the Minute Philosopher, Concerning Motion and Velocity (1736), by John Hanna (PDF and other formats in Ireland)
- Why I Quit Going to Church, by Rupert Hughes (HTML at infidels.org)
- The Ten Commandments (c1946), by Joseph Lewis (HTML at Wayback Machine)
- The Tyranny of God (seventh edition; New York: Freethought Press Association, 1943), by Joseph Lewis (Gutenberg text and illustrated HTML)
- The Berean: A Manual for the Help of Those Who Seek the Faith of the Primitive Church (Putney, VT: Pub. at the Office of the Spiritual Magazine, 1847), by John Humphrey Noyes (multiple formats at archive.org)
- Crimes of Christianity (only volume published), by G. W. Foote and J. M. Wheeler (HTML at Freethought Archives)
- Doubts in Dialogue, by Charles Bradlaugh (HTML at infidels.org)
- English Secularism: A Confession of Belief (US edition of "The Origin and Nature of Secularism...", with new preface; Chicago: Open Court, 1896), by George Jacob Holyoake, contrib. by Paul Carus (multiple formats at archive.org)
- Free Thought and Official Propaganda (New York: B. W. Huebsch, 1922), by Bertrand Russell
- Free Thought and Official Propaganda (London: Watts and Co., 1922), by Bertrand Russell
- Heresy, its Utility and Morality: A Plea and a Justification (London: Austin and Co., ca. 1870), by Charles Bradlaugh (Gutenberg text)
- Humanity's Gain From Unbelief (reprinted from the North American Review; London: Freethough Pub. Co., 1889), by Charles Bradlaugh (Gutenberg text)
- Is it God's Word?, by Joseph Wheless (text files at infidels.org)
- Lectures of Col. R. G. Ingersoll, by Robert Green Ingersoll
- On the Improvement of the Understanding, by Benedictus de Spinoza, trans. by R. H. M. Elwes (Gutenberg text)
- The Origin and Nature of Secularism: Showing That Where Freethought Commonly Ends Secularism Begins (London: Watts and co., 1896), by George Jacob Holyoake (page images at HathiTrust)
- Some Mistakes of Moses (tenth edition; Washington: C. P. Farrell, 1889), by Robert Green Ingersoll (multiple formats at archive.org)
- Why I Left the Ministry and Became an Atheist, by G. Vincent Runyon (HTML at infidels.org)
- When Were Our Gospels Written? (fourth edition; London: Freethought Pub. Co., 1881), by Charles Bradlaugh (Gutenberg text)
- Our corner. (Freethought, 1883), by Annie Besant (page images at HathiTrust)
- Radical rhymes (Wellesley, Mass. : Denton Publishing Company, 1881., 1881), by William Denton (page images at HathiTrust)
- La Révolution et la libre-pensée : la socialisation de la pensée, 1750-1789, la socialisation de la personne, (1789-1792) la socialisation des biens, (1793-1794). (Plon, 1924), by Augustin Cochin (page images at HathiTrust)
- Ideen freisinniger protestantischer Pfarrer in neueren deutschen Romanen (F. Henke, 1920), by John Ludwig August Huchthausen (page images at HathiTrust)
- Free thought and official propaganda, delivered at South Place institute on March 24, 1922 (Watts & co. [etc.], 1922), by Bertrand Russell (page images at HathiTrust)
- The freedom of science (J. F. Wagner, 1914), by Josef Donat (page images at HathiTrust)
- Moral philosopher. (R. Carlile, 1819), by Richard Carlile (page images at HathiTrust)
- The works of Robert G. Ingersoll. (C. P. Farrell, 1900), by Robert Green Ingersoll (page images at HathiTrust)
- A short history of freethought, ancient and modern (Watts & co., 1906), by J. M. Robertson (page images at HathiTrust)
- A history of freedom of thought (Holt, 1913), by J. B. Bury (page images at HathiTrust)
- Departure. (Blade printing paper co., 1875), by Thomas Jefferson Rice (page images at HathiTrust)
- Free thoughts on religion, the church, and national happiness (Printed and sold by T. Jauncy and J. Roberts, 1720), by Bernard Mandeville and B. M. (page images at HathiTrust)
- The creed of Christendom: (Trübner & co., 1875), by William R. Greg (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure (Rose-Belford Publishing Co., 1878), by William R. Greg (page images at HathiTrust)
- The Christian religion... (N.Y., 1882), by Robert Green Ingersoll (page images at HathiTrust)
- The present religious crisis (G. P. Putnam's sons, 1882), by Augustus Blauvelt (page images at HathiTrust)
- The ethic of freethought; a selection of essays and lectures (T. F. Unwin, 1888), by Karl Pearson (page images at HathiTrust)
- The ethic of freethought and other addresses and essays (A. and C. Black, 1901), by Karl Pearson (page images at HathiTrust)
- A critical history of free thought in reference to the Christian religion : eight lectures preached before the University of Oxford, in the year 1862, on the foundation of John Bampton / by Adam Storey Farrar. (D. Appleton, 1863), by Adam Storey Farrar (page images at HathiTrust)
- Radical discourses on religious subjects. : Delivered in Music hall, Boston, Mass.. (W. Denton, 1872), by William Denton (page images at HathiTrust)
- Bible of reason ... (Wright & Owen, 1831), by Benjamin F. Powell (page images at HathiTrust)
- Rome or reason. A memoir of Christian and extra-Christian experiences. (C. P. Somerby, 1888), by Nathaniel Ramsay Waters (page images at HathiTrust)
- Report of the arguments of the attorney of the commonwealth, at the trials of Abner Kneeland, for blasphemy : in the Municipal and Supreme courts, in Boston, January and May, 1834. (Printed by Beals, Homer & Co., 1834), by Samuel Dunn Parker, Massachusetts Supreme Judicial Court, and Massachusetts. Municipal Court (Boston) (page images at HathiTrust)
- Jesus and modern religion (The Open court publishing company; [etc.], 1908), by Edwin A. R. Rumball-Petre (page images at HathiTrust)
- The infidel : freethought and American religion (World Publishing, 1961), by Martin E. Marty (page images at HathiTrust)
- Christianity cross-examined (Arbitrator press, 1941), by William Floyd (page images at HathiTrust)
- Essays on freethinking and plainspeaking. With introductory essays on Leslie Stephen and his works (Smith, Elder, 1907), by Leslie Stephen, Herbert Woodfield Paul, and James Bryce (page images at HathiTrust)
- The nemesis of faith. (London : J. Chapman, 1849., 1849), by James Anthony Froude (page images at HathiTrust)
- A short history of freethought ancient and modern: (Watts & co., 1914), by J. M. Robertson (page images at HathiTrust)
- A history of freedom of thought (Williams and Norgate, 1913), by J. B. Bury (page images at HathiTrust)
- Discours sur la liberté de penser, et de raisonner sur les matieres les plus importantes. Ecrit à l'occasion de l'acroissement d'une nouvelle secte d'esprits forts. Ou de gens qui pensent librement. (A Londres, 1717), by Anthony Collins, Jean Rousset de Missy, and Henri Scheurleer (page images at HathiTrust)
- Discours sur la liberté de penser (A. Londres, 1766), by Anthony Collins, Jean Rosset de Missy, Henri Scheurleer, and Jean-Pierre de Crousaz (page images at HathiTrust)
- Theological essays. (A. and H. Bradlaugh Bonner, 1895), by Charles Bradlaugh (page images at HathiTrust)
- La tin des religions. (E. Flammarion, 1902), by Auguste Dide (page images at HathiTrust)
- The freethinker's catechism (The Truth Seeker Co., 1880), by Edgar Monteil (page images at HathiTrust)
- Handboek van den vrijdenker. (Commissie van Uitg. F.D.N.-Werken, 1922), by Ferdinand Domela Nieuwenhuis (page images at HathiTrust)
- The Truth seeker collection of forms, hymns, and recitations. Original and selected. For the use of liberals. (D. M. Bennett, 1877) (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure (J.R. Osgood, 1877), by William R. Greg (page images at HathiTrust)
- If I were God: a freethinker's faith, incorporating a discussion between the author and a Catholic priest (The Freethought press association, 1930), by William J. Robinson (page images at HathiTrust)
- Problèmes de la libre-pensée. Cinq conférences prononcées à l'aula de l'Université de Genève en mars-avril 1910 (Fischbacher, 1910), by André Numa Bertrand (page images at HathiTrust)
- Infidelity : its aspects, causes and agencies ... (R. Carter & Bros., 1854), by Thomas Pearson (page images at HathiTrust)
- A retrospect of the religious life of England; or, the church, Puritanism, and free inquiry. (Trübner & co., 1876), by John James Tayler and James Martineau (page images at HathiTrust)
- The Atheistic platform. : Part II ... (Free-thought publishing company, 1884), by George Standring, Charles C. Cattell, Charles Bradlaugh, Annie Besant, and Edward B. Aveling (page images at HathiTrust)
- Free thought pamphlets. ([v. p., 1829) (page images at HathiTrust)
- Lectures and essays (a selection) (Watts & co., 1905), by Robert Green Ingersoll (page images at HathiTrust)
- When Love Is Liberty and Nature Law. (W. Reeves, 1893), by John Badcock (page images at HathiTrust)
- Objections to Anarchism. (Freedom Press, 1921), by George Barrett (page images at HathiTrust)
- Objections to Anarchism. (Libertarian Group, 1900), by George Barrett (page images at HathiTrust)
- Der Mensch und das Weltall. (Paul Barthol,), by Paul Barthol (page images at HathiTrust)
- Che Cosa e la Religione. (Editrice C. di Sciullo, 1906), by Ludovico M. Caminita (page images at HathiTrust)
- Darrow-Starr Debate : "Is the Human Race Getting Anywhere?". (Maclaskey and Maclaskey, Shorthand Reporters, 1920), by Clarence Darrow and S. Frederick Starr (page images at HathiTrust)
- The Triumph of Evolution : The Anti-Evolutionists Answered. (The Truth Seeker Co., 1925), by Joseph McCabe (page images at HathiTrust)
- The Dumbness of the Great : A Survey of the Nonsense, Absurdities, Inconsistencies, Illogicalities, Inaccuracies, and Idiocies of the World's Outstanding Leaders. (Haldeman-Julius Publications, 1948), by Joseph McCabe and E. Haldeman-Julius (page images at HathiTrust)
- Libre Examen. (Edition du Groupe d'Etudes Scientifiques, 1907), by Paraf-Javal (page images at HathiTrust)
- Antinatale. (Biblioteca Novatore, 1910), by Libero Tancredi (page images at HathiTrust)
- Freedom of Thought and of Speech. (Charles H. Kerr, 1892), by William Mackintire Salter (page images at HathiTrust)
- Theodore Schroeder's Use of the Psychologic Approach to Problems of Religion, Law Criminology, Sociology and Philosophy : A Bibliography. (Cos Cob, Conn., 1922), by Nancy Eleanor Sankey-Jones (page images at HathiTrust)
- A Unique Heathen : To Which is Now Added Theodore Schroeder on the Erotogenesis of Religion. A Bibliography. (Cos Cob, Conn., 1922), by Nancy Eleanor Sankey-Jones and Theodore Schroeder (page images at HathiTrust)
- One Who Is Different : To Which Is Now Added a Bibliography of Theodore Schroeder on the Psychology of Religion. (Cos Cob, Conn., 1927), by Nancy Eleanor Sankey-Jones and Theodore Schroeder (page images at HathiTrust)
- About the Intellectual Work of Theodore Schroeder. (Cos Cob, Conn., 1944), by Theodore Schroeder (page images at HathiTrust)
- A Cold Enthusiast. (Riverside, Conn., 1913), by Hutchins Hapgood (page images at HathiTrust)
- Determinism, Conduct and Fear Psychology. (New York, 1919), by Theodore Schroeder (page images at HathiTrust)
- The Evolution of Marriage Ideals. (Edwin C. Walker, 1905), by Theodore Schroeder (page images at HathiTrust)
- Intellectual liberty and literary style ([s.n.], 1920), by Theodore Schroeder (page images at HathiTrust)
- Secularism and Religiosity. (N.l., 1945), by Theodore Schroeder (page images at HathiTrust)
- A Discussion of the Social Question. (National Advance, 1891), by Juliet H. Severance and David Jones (page images at HathiTrust)
- The Gospel According to Malfew Seklew : A Revelation of Revaluations. (F.M. Wilkesbarr, 1927), by Malfew Seklew (page images at HathiTrust)
- The Gospel According to Malfew Seklew. (Spencella and Winsex, 1927), by Malfew Seklew (page images at HathiTrust)
- A Lecture on Religious, Political and Social Freedom. (Godfrey and Crandall, 1881), by Juliet H. Severance (page images at HathiTrust)
- A Lecture on the Evolution of Life in Earth and Spirit Conditions. (Godfrey and Crandall, 1882), by Juliet H. Severance (page images at HathiTrust)
- Catalogue of Books, Pamphlets, Tracts, etc., Chiefly Political and Controversial : From the Library of the late Edward Truelove. To be sold by his executors. (London, 1900) (page images at HathiTrust)
- Voltaire, the Infidel : An Essay on his Work as a Free Thinker, Reformer, and Enemy of Priestcraft. (N.l., 1880), by Thomas Walker (page images at HathiTrust)
- Biography of Victoria C. Woodhull. (Golden Age, 1871), by Theodore Tilton (page images at HathiTrust)
- Freethought symposium (Truth Seeker Co., 1890), by Robert Green Ingersoll and Truth Seeker Company (page images at HathiTrust)
- Reminiscences of Charles Bradlaugh (Progressive Publishing Company, 1891), by G. W. Foote (page images at HathiTrust)
- Upton Sinclair finds God (Haldeman-Julius Co., 1936), by Joseph McCabe, E. Haldeman-Julius, Upton Sinclair, and Haldeman-Julius Company (page images at HathiTrust)
- Free thoughts concerning religion : or Nature versus theology (Austin, 1911), by Andrew Jackson Davis (page images at HathiTrust)
- Religion refuted (Tristate Printing Co., 1887), by William D. Hibbard (page images at HathiTrust)
- Essays on freethinking and plainspeaking (G.P. Putnam's Sons, 1877), by Leslie Stephen (page images at HathiTrust)
- Evils of pious frauds (R. Walker for the author, 1826), by Sampson Arnold Mackey (page images at HathiTrust)
- The positive creed of freethought : with some remarks on the relation of freethought to socialism : being a lecture delivered at South Place Institute, on Sunday, April 15, 1888 (William Reeves (the New Temple Press), 1888), by Karl Pearson (page images at HathiTrust)
- Le monopole de l'abrutissement officiel (Édition du Groupe d'études scientifiques, 1909), by Paraf-Javal (page images at HathiTrust)
- The skeptic's defense against all Christian or other priests : being a series of miscellaneous writings having for their main object a comparison of the value of science over religion (Printed for the author, 1895), by Caleb Marshall Landers (page images at HathiTrust)
- Critical remarks on the truth and harmony of the four gospels : with observations on the instructions given by Jesus Christ, and the doctrines of Christianity (Printed for R. Carlile, 1827), by Gordon Stein (page images at HathiTrust)
- Is there a life after death? (Peter Eckler Publishing Co., 1921), by Marshall J. Gauvin (page images at HathiTrust)
- I don't know, do you? (The Roycrofters, 1916), by Marilla M Ricker (page images at HathiTrust)
- I am not afraid, are you? (Printed by the Roycrofters, 1917), by Marilla M. Ricker and Roycroft Shop (page images at HathiTrust)
- Faith or fact (Peter Eckler, 1897), by Henry M. Taber and Robert Green Ingersoll (page images at HathiTrust)
- An apology for his resignation of the office of a vice-president of the National Secular Society : addressed in the first instance to the members of the executive of that society (Printed by G. Standring, 1897), by James Pinkerton Gilmour (page images at HathiTrust)
- Free thought lectures! and poems! (A.S. York, 1888., 1888), by James L. York (page images at HathiTrust)
- Free thought poems (Mercury Steam Print., 1882), by James L. York (page images at HathiTrust)
- The evidences against Christianity (J.S. Hittell, 1856), by John S. Hittell (page images at HathiTrust)
- The nemesis of faith (Belfords, Clarke, 1879), by James Anthony Froude (page images at HathiTrust)
- The absurdities of the Christian religion (Haldeman-Julius Co., 1936), by Joseph McCabe, E. Haldeman-Julius, and Haldeman-Julius Company (page images at HathiTrust)
- Doubts in dialogue (Watts, 1909), by Charles Bradlaugh (page images at HathiTrust)
- A review of the evidences of Christianity ... : to which is prefixed an extract from Wyttenbach's Opuscula on the ancient notices of the Jewish nation previous to the time of Alexander the Great. (J.P. Mendum, 1887), by Abner Kneeland and Daniel Wyttenbach (page images at HathiTrust)
- Great and mind-liberating thoughts (Haldeman-Julius Publications, 1940), by John Mason and Haldeman-Julius Company (page images at HathiTrust)
- The Freethinker's text-book. (Freethought Publishing Co., 1800), by Annie Wood Besant and Charles Bradlaugh (page images at HathiTrust)
- God and his book : the Bible : where did we get it, and what is it? (W. Stewart, 1800), by William Stewart Ross (page images at HathiTrust)
- A brief essay about the gods and my friends. (Walden Press, 1948), by Louis Aaron Reitmeister (page images at HathiTrust)
- Exposʹe of religious fraud : who, what, when, where / by L.F. Schrader. (Meador Pub. Co., 1944), by L. F. Schrader (page images at HathiTrust)
- Views of religion (L. K. Washburn, 1906), by R. K. Noyes (page images at HathiTrust)
- The secret of the East. (Boston : Index association, 1883., 1883), by Felix L. Oswald (page images at HathiTrust)
- Deity analyzed. In six lectures. (Truth Seeker Co., 1890), by John R. Kelso (page images at HathiTrust)
- Does atheism rest its case on logic? (Haldeman-Julius Co., 1936), by Joseph McCabe, E. Haldeman-Julius, and Haldeman-Julius Company (page images at HathiTrust)
- Colonel Robert G. Ingersoll as he is (The Truth Seeker Company, 1896), by Eugene Montague Macdonald (page images at HathiTrust)
- The clergy a source of danger to the American republic. (W. F. Jamieson, 1873), by William F. Jamieson (page images at HathiTrust)
- Speeches (B. Bonner, 1895), by Charles Bradlaugh and J. M. Robertson (page images at HathiTrust)
- A grammar of freethought (Pioneer Press, 1921), by Chapman Cohen (page images at HathiTrust)
- A critical history of free thought in reference to the Christian religion. (D. Appleton, 1863), by Adam Storey Farrar (page images at HathiTrust)
- Selected prose works of Shelley (Watts, 1915), by Percy Bysshe Shelley and Henry Stephens Salt (page images at HathiTrust)
- The inquirer's text-book : being the substance of thirteen lectures on the Bible (J.P. Mendum, 1846), by Robert George Cooper (page images at HathiTrust)
- Popular Christianity : its transition state and probable development (J. Chapman, 1849), by Frederick J. Foxton (page images at HathiTrust)
- Lectures of Col. R.G. Ingersoll; including his Letters on the Chinese god--Is suicide a sin?--The right to one's life--etc. etc. etc. (Rhodes & McClure, 1898), by Robert Green Ingersoll (page images at HathiTrust)
- An agnostic looks at life ; challenges of a militant pen (Haldeman-Julius company, 1926), by E. Haldeman-Julius (page images at HathiTrust)
- Commentaries on Hebrew and Christian mythology (The Truth Seeker Co., 1896), by Parish B. Ladd (page images at HathiTrust)
- A short history of freethought, ancient and modern. (Watts & Co., 1915), by J. M. Robertson (page images at HathiTrust)
- Theologisch-politische abhandlungen (J.F. Steinkopf, 1805), by Benedictus de Spinoza, Carl Philipp Conz, and Christoph Gottlieb von Murr (page images at HathiTrust)
- Theologisch-politische Abhandlung ... (L. Heimann, 1870), by Benedictus de Spinoza and J. H. von Kirchmann (page images at HathiTrust)
- Der theologisch-politische Traktat. (P. Reclam, 1886), by Benedictus de Spinoza (page images at HathiTrust)
- Miscellaneous pamphlets (W. Stewart, 1880), by William Steward Ross (page images at HathiTrust)
- Appendix to the Theological works of Thomas Paine. (Printed and published by M.A. Carlile, 1820), by Thomas Paine (page images at HathiTrust)
- Nature suffrage. (American association for the taxation of church property, 1917), by Charles Ralph Mabee (page images at HathiTrust)
- Über Religion : im Auftrage des Verfassers aus seinem literarischen Nachlasse (R. Löwit, 1924), by Josef Popper-Lynkeus (page images at HathiTrust)
- The works of Robert G. Ingersoll ... (The Dresden publishing co., C. P. Farrell, 1909), by Robert Green Ingersoll and Herman Eugene Kittredge (page images at HathiTrust)
- Greatest lectures, containing speeches and addresses never before printed outside of the complete works. (Freethought Press Association, 1944), by Robert Green Ingersoll (page images at HathiTrust)
- Flowers of freethought. (R. Forder, 1893), by G. W. Foote (page images at HathiTrust)
- Spinoza, Theologisch-politischer Traktat (F. Meiner, 1922), by Benedictus de Spinoza and Carl Gebhardt (page images at HathiTrust)
- Les libres penseurs (J. Lecoffre, 1850), by Louis Veuillot (page images at HathiTrust)
- Occasional thoughts of Horace Seaver. From fifty years of free thinking. (J.P. Mendum, 1888), by Horace Seaver (page images at HathiTrust)
- The eliminator; or, Skeleton keys to sacerdotal secrets. (Printed for the author by J.B. Lippincott company, 1894), by Richard Brodhead Westbrook (page images at HathiTrust)
- The creed of Christendom; its foundations and superstructure. (J. Chapman, 1851), by William R. Greg (page images at HathiTrust)
- Roots : a plea for tolerance. (R. Bentley, 1873), by George Robert Charles Herbert Pembroke (page images at HathiTrust)
- Essays on freethinking and plainspeaking (G. P. Putnam's sons, 1905), by Leslie Stephen, Herbert W. Paul, and James Bryce (page images at HathiTrust)
- Appetites and passions; their origin, and how to cast them out. (A.J. Davis, 1863), by Andrew Jackson Davis (page images at HathiTrust)
- Commentaries on Hebrew and Christian mythology (P. Eckler, 1896), by Parish B. Ladd (page images at HathiTrust)
- South Place discourses, 1883-1892. (1883), by South Place Ethical Society (London, England) (page images at HathiTrust)
- Přednášky professora T.G. Masaryka (Vyd. nákladem Výkonného výboru Svazu svobodomyslných, 1907), by T. G. Masaryk (page images at HathiTrust)
- Arrows of freethought (H.A. Kemp, 1882), by G. W. Foote (page images at HathiTrust)
- Through agnostic spectacles (Truth Seeker Co., 1919), by Alexander Kadison (page images at HathiTrust)
- The Bible comically illustrated (The Truth Seeker Co., 1928), by Watson Heston (page images at HathiTrust)
- An abridgment and review of each chapter of the Bible and Testament: with quotations from the Douay Bible and some eminent writers. (The author, 1847), by Henry Aldworth (page images at HathiTrust)
- Pocket theology. (Truth Seeker Co., 1914), by Voltaire (page images at HathiTrust)
- Faith and free thought : a second course of lectures delivered at the request of the Christian Evidence Society (A. D. F. Randolph, 1872), by England) Christian Evidence Society (London (page images at HathiTrust)
- Considerations respecting the recognition of friends in another world; on the affirmed descent of Jesus Christ into hell: on phrenology in connextion with the soul, and on the existence of a soul in brutes. (Phildelphia : G. S. Appleton ; New York : Appleton & co., 1845., 1845), by John Redman Coxe (page images at HathiTrust)
- The Undewwood-Marples debate : commencing July 20, 1875 and continuing four evenings between B. F. Underwood and Rev. John Marples (D. M. Bennett, 1877), by B. F. Underwood and John Marplel (page images at HathiTrust)
- Flowers of freethought (Pioneer Press, 1893), by G. W. Foote (page images at HathiTrust)
- Half-hours with freethinkers (Austin & Co., 1865), by John Watts and Charles Bradleigh (page images at HathiTrust)
- America vindicated from European theologico-political and infidel aspersions. (Morgan & Co., 1855), by Thomas J. Vaiden (page images at HathiTrust)
- The Burgess-Underwood debate : commencing June 29, 1875, at Aylmer, Ontario, and continuing four days, between O.A. Burgess ... and B.F. Underwood ... (D.M. Bennett, 1876), by O. A. Burgess and B. F. Underwood (page images at HathiTrust)
- Letters upon divers subjects in theology : addressed to licentiates, or, candidates, for the gospel ministry and the American youth in general (W.S. Haven, 1854), by William McGirr (page images at HathiTrust)
- Debate on the evidences of Christianity, containing an examination of the "social system" and of all the systems of scepticism of ancient and modern times (A. Campbell, 1829), by Robert Owen and Alexander Campbell (page images at HathiTrust)
- The evidences against Christianity (C. Blanchard, 1857), by John S. Hittell (page images at HathiTrust)
- Six interviews with Robert G. Ingersoll on six sermons by the Rev. T. De Witt Talmage, D. D. To which is added A Talmagian catechism. (C. P. Farrell, 1882), by Robert Green Ingersoll and Isaac Newton Baker (page images at HathiTrust)
- Infidelity : its aspects, causes and agencies ... (New York : Robert Carter & Bros., 1855., 1855), by Thomas Pearson (page images at HathiTrust)
- Drei Drey Fragen. I. Wie entstand die heutige Frey denkery, Maurerey? II. Wie verbreitete sie sich so sehr? III. Wie kann sie unterdrücket werden? ... von einem katholischen Patrioten Deutschlands. (S.l., 1795) (page images at HathiTrust)
- The eliminator : or, Skeleton keys to sacerdotal secrets (Printed for the author by J.B. Lippincott, 1894), by Richard B. Westbrook (page images at HathiTrust)
- A trip to Rome (J. E. Hughes, 1905), by J. B. Wilson (page images at HathiTrust)
- Deacon Skidmore's letters. Written for the columns of The truth seeker (D.M. Bennett, 1879), by De Robigne Mortimer Bennett (page images at HathiTrust)
- Searching for truth. (P. Eckler, 1902), by George Otis Draper (page images at HathiTrust)
- The youth's liberal guide for their moral culture and religious enlightenment (Trayser Bros., 1877), by Hermann Marcus Kottinger (page images at HathiTrust)
- S. Ludvigh's Reden, Vorlesungen und prosaische Aufsaetze, im gebiete der Religion, Philosophie und Geschichte. (Verlag des Verfasser, 1850), by Samuel Ludvigh (page images at HathiTrust)
- Theologisch-politischer Traktat (Dürr, 1908), by Benedictus de Spinoza (page images at HathiTrust)
- Theologisch-politische abhandlungen (J.A. Finsterlin, 1826), by Benedictus de Spinoza and J. A. Kalb (page images at HathiTrust)
- The religion of science; or, The art of actualizing liberty, and of perfecting and satisfactorily prolonging happiness: being a practical answer to the great question,--"If you take away my religion, what will you give me in its stead?" (C. Blanchard, 1860), by Calvin Blanchard (page images at HathiTrust)
- Remarks upon a late Discourse of free-thinking: in a letter to N.N. (W. Thurlbourn, 1737), by Richard Bentley (page images at HathiTrust)
- Die krisis in Christentum und die Religion der Zukunft. Ein Weck- und Notruf an unsere Zeit ... (E. Pierson, 1908), by Franz Mach (page images at HathiTrust)
- A discourse of free-thinking, occasion'd by the rise and growth of a sect call'd free-thinkers ... (London, 1713), by Anthony Collins (page images at HathiTrust)
- What is the Bible? (The Open court Pub. Co.;, 1904), by John Adam Ruth (page images at HathiTrust)
- Flowers of freethought : second series (G. Foote, 1894), by G. W. Foote (page images at HathiTrust)
- Christianity, its evidences, its origin, its morality, its history (R. Forder, 1893), by Annie Besant (page images at HathiTrust)
- Flowers of freethought. (G. Foote, 1893), by G. W. Foote (page images at HathiTrust)
- El librepensamiento: doctrinas y hechos. Carta pastoral ... dirige al clero y fieles de la archidiócesis. (Gimeno, 1912), by Victoriano Guisasola y Menéndez (page images at HathiTrust)
- The Christian mythology unveiled, in a series of lectures ... ([London, 1842), by Logan Mitchell (page images at HathiTrust)
- Infidelity : its aspects, causes and agencies ... (R. Carter & Bros., 1860), by Thomas Pearson (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure (Houghton, Osgood, & Co., 1879), by William R. Greg (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure (Trübner, 1874), by William R. Greg (page images at HathiTrust)
- The limitations of toleration : a discussion between Robert G. Ingersoll, Frederic R. Coudert, Stewart L. Woodford, before the Nineteenth Century Club, of New York, at the Metropolitan Opera House (Truth Seeker, 1889), by Robert Green Ingersoll, Lisa J. Peck, Frederic R. Coudert, Stewart L. Woodford, and Truth Seeker Company (page images at HathiTrust)
- The ethic of freethought; a selection of essays and lectures. (T. F. Unwin, 1888), by Karl Pearson (page images at HathiTrust)
- A reply to Apeleutherus ... : In which his arguments to prove that sabbaths, ministers, and public worship, are useless and ought to be abolished, are examined and refuted. (Printed for the author, and sold by R. Hunter (successor to Mr. Johnson) ..., 1819), by John Bentley (page images at HathiTrust)
- A review of the evidences of Christianity; in a series of lectures, delivered in Broadway hall, New York, August, 1829. To which is prefixed, an extract from Wyttenbach's Opuscula, on the ancient notices of the Jewish nation previous to the time of Alexander the Great. (Office of the Investigator, 1831), by Abner Kneeland, Daniel Albert Wyttenbach, George Henry Evans, Robert Dale Owen, Office of the New York Daily Sentinel, Office of the Free Enquirer, and Boston Investigator (Firm) (page images at HathiTrust)
- Free enquirer. (Published at the office of the Free Enquirer [by Robert Dale Owen], 1830), by Abner Kneeland, Antoine Vieira, John Neale, Frances Wright, and Robert Dale Owen (page images at HathiTrust)
- Syntagma of the evidences of the Christian religion. (Printed for the Author, and published by R. Carlile, 1828), by Robert Taylor (page images at HathiTrust)
- The gods (C. P. Farrell, 1882), by Robert Green Ingersoll (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure (Trubner, 1877), by William R. Greg (page images at HathiTrust)
- Works. (The Ingersoll league, 1929), by Robert Green Ingersoll (page images at HathiTrust)
- The freethinkers' manual (Radical Pub. Co., 1902), by John Baur and H. F. Herbert (page images at HathiTrust)
- The gods : and other lectures (C. P. Farrell, 1889), by Robert Green Ingersoll (page images at HathiTrust)
- Researches in oriental history, embracing the origin of the Jews, the rise and development of Zoroastrianism, and the derivation of Christianity (The author, 1890), by George W. Brown (page images at HathiTrust)
- Speeches by Charles Bradlaugh (Watts, 1890), by Charles Bradlaugh and J. M. Robertson (page images at HathiTrust)
- Die Freiheit der Wissenschaft, ein Gang durch das moderne Geistesleben. (F. Rauch, 1925), by Josef Donat (page images at HathiTrust)
- Tractatus theologico-politicus : continens dissertationes aliquot, quibus ostenditur libertatem philosophandi non tantum salva pietate, & reipublicae pace posse concedi, sed eandem nisi cum pace reipublicae, ipsaque pietate tolli non posse (Apud Henricum Kunraht [sic] [i.e. Jan Rieuwertsz], 1674), by Benedictus de Spinoza (page images at HathiTrust)
- Jo. Laur. Mosheim Vindiciae antiquae Christianorum disciplinae : adversus celeberrimi viri Jo. Tolandi, Hiberni, Nazarenum. ... Accedit de vita, fatis et scriptis Joannis Tolandi commentatio. : Praefationem, qua atheismi calumnia a S. Scriptura depellitur, praemisit J. Franciscus Buddeus .. (Impensis Viduae Benj. Schilleri & Jo. Christoph. Kisneri, 1722), by Johann Lorenz Mosheim and Joannes Franciscus Buddeus (page images at HathiTrust)
- La fripponerie laïque des pretendus esprits-forts d'Angleterre : ou, Remarques de Phileleuthere de Leipsick sur le discours de la liberté de penser (chez J. Wetstein & G. Smith, 1738), by Richard Bentley, J. Wetstein, and Armand Bolabeleau de la Chapelle (page images at HathiTrust)
- Buen sentido fundado en la naturaleza (Impr. Liberal, 1821), by Cura despreocupado and ciudadano S L. M. M. J. (page images at HathiTrust)
- A theologico-political treatise. (Edwards Brothers], 1942), by Benedictus de Spinoza (page images at HathiTrust)
- Christianity and common sense. (Longman, Green, Longman, Roberts, & Green, 1863), by Willoughby Jones (page images at HathiTrust)
- La liberté de la pensée. ([s.n.], 1911), by Gérard de Lacaze-Duthiers (page images at HathiTrust)
- The nemesis of faith. (W. Scott Pub. Co., 1904), by James Anthony Froude (page images at HathiTrust)
- Bible romances (Pioneer Press, 1922), by G. W. Foote (page images at HathiTrust)
- Deset rozprav svobodomyslných (A. Geringer, 1902), by Josef Jiří Král (page images at HathiTrust)
- Science and secularism (Freethought, 1882), by Edward B. Aveling (page images at HathiTrust)
- The futility of prayer (Freethought Pub. Co., 1879), by G. W. Foote (page images at HathiTrust)
- Interview with the devil (R. Forder, 1893), by G. W. Foote (page images at HathiTrust)
- Glance at past experience. (Watts, 1882), by William Hitchman (page images at HathiTrust)
- False claims : an address delivered before the New York Freethinkers' Association at Rochester, N. Y., Sept. 1, 1883 (Truth Seeker, 1883), by John E. Remsburg (page images at HathiTrust)
- Report of the two nights' debate, at Wigan, between Iconoclast [i.e. Charles Bradlaugh] and W. M. Hutchings. (Barker, 1861), by Charles Bradlaugh and W. M. Hutchings (page images at HathiTrust)
- Vrije gedachte : aanval (Uitg. Weekblad "De Dageraad,", 1912), by Henrik Schutjes and P. van Dorp (page images at HathiTrust)
- Was Jesus an impostor? : a discussion between Agnes Rollo Wilkie and Arthur B. Moss (Watts, 1880), by Agnes Rollo Wilkie and Arthur B. Moss (page images at HathiTrust)
- The logic of life, deduced from the principle of freethought (A.K. Butts & Co., 1870), by George Jacob Holyoake (page images at HathiTrust)
- From Christian pulpit to secular platform. (Pioneer Press, 1903), by John Lloyd (page images at HathiTrust)
- The law of reason : embracing the subjects of Utility of free discussion, elements of metaphysics, philosophical necessity, and principles of materialism; A discourse on the subject of Deity; Selections, from Mirabaud's System of nature, and the Bon sens of the cure Meslier, on the existence and attributes of the Deity; Observations by Wm. Hammon, ... Immortality of the soul, by David Hume, ...also, an Epitome of Mr. Owen's social system, ... Mr. Owen's opinion of Jesus Christ, ... Select poetry, &c. (Printed by J. Thompson, 1831), by David Hume, Paul Henri Thiry Holbach, William Hammon, and Robert Owen (page images at HathiTrust)
- Studying the Bible: or, Brief criticisms on some of the principal Scripture texts. (J.P.Mendum, 1870), by Elmina Slenker (page images at HathiTrust)
- Christianity unveiled : being an examination of the principles and effects of the Christian religion ([s.n.], 1835), by Paul Henri Thiry Holbach, Nicolas Antoine Boulanger, and W. M. Johnson (page images at HathiTrust)
- El cristianismo al descubierto : ó examen de los principios y effectos de la religion Cristiana (Libreria Americana de Rosa, 1837), by Paul Henri Thiry Holbach and Nicolas Antoine Boulanger (page images at HathiTrust)
- The Roman Catholic Church and free thought : a controversy between Archbishop Purcell, of Cincinnati, and Thomas Vickers, Minister of the First Congregational Church of the same city : together with an appendix containing the Encyclical Letter and Syllabus of Pope Pius IX, dated December 8, 1864 : in the original Latin, with a faithful translation. (Published by the First Congregational Church ..., 1868), by Thomas Vickers, John Baptist Purcell, and Catholic Church. Pope (1846-1878 : Pius IX) (page images at HathiTrust)
- Moses Mendelssohn und die Denk- und Glaubensfreiheit im Judenthume; mit besonderer Beziehung auf die Confirmation. (J. C. Huber, 1859), by Samuel Holdheim (page images at HathiTrust)
- The works of Robert G. Ingersoll (Ingersoll, 1900), by Robert Green Ingersoll and Clinton P. Farrell (page images at HathiTrust)
- The creed of Christendom : its foundations and superstructure (C. Blanchard, 1855), by William R. Greg (page images at HathiTrust)
- Théophilanthropie. (Aux bureaux du journal La Libre Conscience, 1868), by J.-B. Chemin-Dupontès and Henri Carle (page images at HathiTrust)
- Debate on the evidences of Christianity; containing an examination of the social system, and of all the systems of scepticism of ancient and modern times, held in the city of Cincinnati, for eight days successively (R. Groombridge;, 1839), by Robert Owen and Alexander Campbell (page images at HathiTrust)
- Primera conferencia acerca de moral (Imp. de la Sociedad Gutenberg, 1905), by Roberto Andrade, Ricardo Félix, and B. Rosendo Uquillas (page images at HathiTrust)
- Unbelief in the nineteenth century : a critical history (R. Culley, 1907), by Henry C. Sheldon (page images at HathiTrust)
- Searching for truth. (Watts & Co., 1902), by George Otis Draper (page images at HathiTrust)
- Die Freiheit der Wissenschaft; ein Gang durch das moderne Geistesleben. (F. Rauch, 1910), by Josef Donat (page images at HathiTrust)
- A discourse of free-thinking, occasion'd by the rise and growth of a sect call'd Free-thinkers. (London, 1713), by Anthony Collins (page images at HathiTrust)
- An apology for professing the religion of nature, in the eighteenth century of the Christian era; addressed to the Right Reverend Dr. Watson, Lord Bishop of Landaff. (Printed for J. Ridgway, 1789), by David Williams (page images at HathiTrust)
- The secret of the east : or, the origin of the Christian religion, and the significance of its rise and decline (The truth seeker company, 1883), by Felix L. Oswald (page images at HathiTrust)
- Lectures of Col. R.G. Ingersoll : including his answers to the clergy, his oration at his brother's grave, etc., etc. : complete. -- (Rhodes and McClure, 1904), by Robert Green Ingersoll (page images at HathiTrust)
- The church and freethought. (Truth Seeker Co., 1894), by Franklin Steiner (page images at HathiTrust)
- Liberty of man, woman and child : lecture (The Albany News Co., 1877), by Robert Green Ingersoll (page images at HathiTrust)
- Some mistakes of Moses (C.P. Farrell, 1907), by Robert Green Ingersoll (page images at HathiTrust)
- De vrijdenker en zijn ongeloof (Dageraads-Boekhandel, 1916), by F. Domela Nieuwenhuis (page images at HathiTrust)
- Kristendomen och den fria tanken; en kritiskt historisk framställning. (Björck & Börjesson, 1908), by Anton Kristen Nyström (page images at HathiTrust)
- The moralist. (Printed and pub. by R. Carlile, 1823), by Richard Carlile (page images at HathiTrust)
- Modern freethought (Sands & Co., 1907), by John Gerard (page images at HathiTrust)
- Science et libre pensée. (Calmann-Lévy, 1905), by M. Berthelot (page images at HathiTrust)
- The Underwood-Marples debate : commencing July 20, 1875 and continuing four evenings between B.F. Underwood, Boston, Mass. and Rev. John Marples, Toronto, Ont. (D.M. Bennett, office of the Truth seeker, Liberal and Scientific Publishing House, 1877), by B. F. Underwood, John T. Hawke, John Marples, and Harry Houdini Collection (Library of Congress) (page images at HathiTrust)
- Career of religious ideas. (D. M. Bennett, 1878), by Hudson Tuttle (page images at HathiTrust)
- Essays on freethinking and plainspeaking. (Longmans, Green and co., 1873), by Leslie Stephen (page images at HathiTrust)
- God and my neighbor (C.H. Kerr, 1934), by Robert Blatchford (page images at HathiTrust)
- An oration on the gods (Daily Bulletin Steam Book and Job Print, 1873), by Robert Green Ingersoll (page images at HathiTrust)
- The evidences of Christianity : a debate (H. S. Bosworth, 1858), by Alexander Campbell and Robert Owen (page images at HathiTrust)
- A sermon on loyalty; A remonstrance to God; and A sermon on free inquiry. Observations on public worship. (J. Watson, 1840), by Robert Dale Owen (page images at HathiTrust)
- Podrobná zpráva (Nákl. Volné myšlenky, 1907), by International Free Thought Congress (1907 : Prague) and Julius Myslík (page images at HathiTrust)
- Pamphlets on free thought. (1713) (page images at HathiTrust)
- An inquiry into the nature of responsibility : as deduced from savage justice, civil justice, and social justice (J. Guest, 1840), by T. Simmons Mackintosh (page images at HathiTrust)
- Influence of the clerical profession (J. Watson, 1840), by Robert Dale Owen (page images at HathiTrust)
- Men, women and gods, and other lectures (Truth Seeker Co., 1885), by Helen H. Gardener and Robert Green Ingersoll (page images at HathiTrust)
- A defense of modern thought in reply to a pamphlet by the Bishop of Ontario on "agnosticism" (Hunter, Rose & Co., 1884), by William D. Le Sueur and John Travers Lewis (page images at HathiTrust)
- The creed of Christendom its foundations contrasted with its superstructure (Rose-Belford Pub. Co., 1878), by William Rathbone Greg (page images at HathiTrust)
- Lecture on freedom of mind, by the Reverend Henry Wilkes, A.M., and speech of His Excellency the Right Hon. the Earl of Elgin & Kincardine, K. T., &c. delivered before the Mercantile Library Association of Montreal, at the opening of the winter's course of lectures of that institution, Nov. 16, 1848. (s.n.], 1848), by Henry Wilkes and James Bruce Elgin (page images at HathiTrust)
- Vindex again (s.n., 1884), by William D. Le Sueur and W. D. Armstrong (page images at HathiTrust)
- The ethic of freethought and other addresses and essays (Adam and Charles Black, 1901), by Karl Pearson (page images at HathiTrust)
- Woman and Christianity, the subjection and exploitation of a sex (The Pioneer Press, 1919), by Chapman Cohen and England) Pioneer Press (London (page images at HathiTrust)
- The Bible of Bibles : or, Twenty-seven "Divine revelations:" containing a description of twenty-seven bibles, and an exposition of two thousand Biblical errors in science, history, morals, religion, and general events; also a delineation of the characters of the principal personages of the Christian Bible, and an examination of their doctrines (Colby & Rich, 1879), by Kersey Graves and Lydia M. Graves (page images at HathiTrust)
- Ingersoll to the clergy; his answers to their questions and criticisms. To which are added, Colonel Ingersoll's latest address on Thomas Paine at Chickering Hall, New York, 1892; Colonel Ingersoll's paper on God in the Constitution. (The Truth Seeker Co., 1897), by Robert Green Ingersoll (page images at HathiTrust)
- The Free Religious Association its twenty-five years and their meaning : an address for the twenty-fifth anniversary of the association, at Tremont Temple, Boston, May 27th, 1892 (Free Religious Association of America, 1892), by William J. Potter (page images at HathiTrust)
- Volní myslitelé v Čechách. (Nakl. Samostatnosti, 1907), by J. Kalivoda (page images at HathiTrust)
- La libre-pensée et ses martyrs : petit dictionnaire de l'intolérance cléricale. (Librairie de propagande socialiste et anticléricale, 1904), by Maurice Barthélemy (page images at HathiTrust)
- Infidelity : its aspects, causes and agencies ; being the prize essay of the British Organization of the Evangelical Alliance (Partridge and Oakey, 1853), by Thomas Pearson (page images at HathiTrust)
- An inquiry into the truth of dogmatic Christianity, comprising a discussion with a bishop of the Roman Catholic church (G. P. Putnam's sons, 1893), by William Dearing Harden (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure. (Belford, Clarke, 1880), by William R. Greg (page images at HathiTrust)
- Theology (Evangelical Reform Publication Co., 1887), by John Miller (page images at HathiTrust)
- Mistakes of Moses (C.P. Farrell, 1880), by Robert Green Ingersoll (page images at HathiTrust)
- The infidel's text-book being the substance of thirteen lectures on the Bible. (J. P. Mendum, 1881), by Robert Cooper (page images at HathiTrust)
- Radical discourses on religious subjects delivered in Music Hall, Boston, Mass. (W. Denton ;, 1872), by William Denton (page images at HathiTrust)
- A short history of freethought, ancient and modern (Watts & Co., 1915), by J. M. Robertson (page images at HathiTrust)
- Jewish God and religion. (Ḥevre dorshey emes̀, 1907), by Jacob Netter (page images at HathiTrust)
- The creed of Christendom : its foundations contrasted with its superstructure (Trubner, 1875), by William R. Greg (page images at HathiTrust)
- Vorträge von Hedwig Henrich-Welhelmi : (Gehalten in Amerika in den Jahren 1887-1889) ; mit dem Bildniss der Verfasserin ... (Freidenker, 1889), by Hedwig Henrich Wilhelmi (page images at HathiTrust)
- L'église de la libre-pensée. (Bibliothéque du Signal, 1905), by pseud Stheno (page images at HathiTrust)
- The candle from under the bushel (Luke xi, 33) ; or, Thirteen hundred and six questions to the clergy and for the consideration of others (Truth Seeker Co., 1889), by William Hart (page images at HathiTrust)
- From old to new. A sketch of the present religious position. In eight lectures. (Longmans, Green, and co., 1872), by F. Reginald Statham (page images at HathiTrust)
- Sinai and Olympus; parallels in heathen myth and Hebrew scripture ([The] Truth Seeker Co., 1899) (page images at HathiTrust)
- Libre examen. (C.Reinwald et cie, 1877), by Louis Viardot (page images at HathiTrust)
- Ṿelkhen ṿeg? (Ferlag fun Ideshen fraydeynḳer, 1907), by Robert Green Ingersoll and Morris Wulfman (page images at HathiTrust)
- Men, women, and gods, and other lectures (Belford, Clarke & Co., 1885), by Helen H. Gardener and Harry Houdini Collection (Library of Congress) (page images at HathiTrust)
- Men, women, and gods, and other lectures (Truth Seeker, 1885), by Helen H. Gardener and Robert Green Ingersoll (page images at HathiTrust)
- The freethinker. (G.W. Foote, 1881) (page images at HathiTrust)
- Essays on the work entitled Supernatural religion (Macmillan, 1893), by J. B. Lightfoot (page images at HathiTrust)
- The creed of Christendom: its foundations and superstructure. (Trüber & Co., 1883), by William R. Greg (page images at HathiTrust)
- Three nights' discussion between the Rev. Joseph Baylee, D.D., and Mr. C. Bradlaugh. (Austin & Co. ..., 1860), by Joseph Baylee and Charles Bradlaugh (page images at HathiTrust)
- Wanted! $10,000 from Col. Robert G. Ingersoll, the reasons why he should pay it, a lecture by prof. Frank I. Jerris [sic] ([s.n.], 1888), by Frank I. Jervis (page images at HathiTrust)
- Free thinker (Printed for J. Brindley :, 1733) (page images at HathiTrust)
- Religion and the Bible. (The Truth seeker company, 1894), by F. D. Cummings (page images at HathiTrust)
- Unbelief in the nineteenth century ; a critical history. (Eaton & Mains;, 1907), by Henry C. Sheldon (page images at HathiTrust)
- The one test of character. (Ross & Tousey, 1860), by Gerrit Smith (page images at HathiTrust)
- Religio-political physics, or, The science and art of man's deliverance from ignorance-engendered mysticism, and its resulting theo-moral quackery and governmental brigandage (C. Blanchard, 1861), by Calvin Blanchard (page images at HathiTrust)
- La libre-pensée contemporaine : sa nature et ses principales formes (H. Oudin, 1885), by Guillaume Canet (page images at HathiTrust)
- Answers to Christian questions and arguments. (The Truth Seeker Co., 1880), by De Robigne Mortimer Bennett (page images at HathiTrust)
- The coming creed of the world. Is there not a faith more sublime and blissful than Christianity! A voice crying in the wilderness. (W.H. Thompson, 1884), by Frederick Gerhard (page images at HathiTrust)
- The gods, and other lectures. (University of California, Library Photographic Service, 1983), by Robert Green Ingersoll (page images at HathiTrust)
- Age of reason, being an investigation of true and fabulous theology. Part the 1st-[2nd] (G. Vale, 1853), by Thomas Paine (page images at HathiTrust)
- Die Rückständigkeit des modernen Freidenkertums; eine Untersuchung. (E. Hofmann, 1905), by Max Steiner (page images at HathiTrust)
- A critical history of free thought in reference to the Christian religion : eight lectures preached before the University of Oxford, in the year M.DCCC.LXII., on the foundation of the late Rev. John Bampton (D. Appleton, 1864), by Adam Storey Farrar (page images at HathiTrust)
- An address on the influence of the clerical profession. As delivered in the Hall of Science, New York. To which is added, A tract and a warning; Truth and error; On the fear of God. (J. Watson, 1842), by Robert Dale Owen (page images at HathiTrust)
- Das zeitalter der vernunft; eine untersuchung über wahre und märchenhafte Gottesvorstellung (Verlag des "N. freirel. (früher Uhlichschen) Sonntagsblattes,", 1890), by Thomas Paine (page images at HathiTrust)
- The life and immortality of man. An argumental lecture (P. Eckler, 1898), by Albert Gibbs Gabrielle (page images at HathiTrust)
- The works of Robert G. Ingersoll in twelve volumes. (Dresden ;, 1907), by Robert Green Ingersoll and Herman E. Kittredge (page images at HathiTrust)
- The trial and imprisonment of J.W. Gett for blasphemy (Freethought Socialist League, 1910), by Ernest Pack and Freethought Socialist League (page images at HathiTrust)
- The evidences of Christianity : a debate between Robert Owen andAlexander Campbell, containing an examination of the "social system" and all the systems of skepticism of ancient and modern times, held in the city of Cincinnati, in April 1829. (McQuiddy Print. Co., 1912), by Robert Owen and Alexander Campbell (page images at HathiTrust)
- The freethinker's text-book. (Freethought Pub. Co., 1870), by Charles Bradlaugh and Annie Besant (page images at HathiTrust)
- Humanizing Biblical religion. (Arbitrator press, 1943), by William Floyd (page images at HathiTrust)
- What great men think of religion. (The Christopher publishing house, 1945), by Ira D. Cardiff (page images at HathiTrust)
- The God of fundamentalism and other studies (P. Covici, 1925), by Horace J. Bridges (page images at HathiTrust)
- Lectures : including his letters on The Chinese god. Is suicide a sin? The right to one's life. Etc., etc., etc. (Rhodes & McClure, 1907), by Robert Green Ingersoll (page images at HathiTrust)
- The old faiths perish : an adventure in the logic of belief (D. Appleton-Century Co., 1939), by Jay William Hudson (page images at HathiTrust)
- The trail of a truth seeker. (N.E. Tully, 1927), by Norman Ernest Tully (page images at HathiTrust)
- Theism found wanting (Watts, 1920), by Walter Scott Godfrey and J. M. Robertson (page images at HathiTrust)
- Reason or faith--which shall prevail? (Haldeman-Julius Co., 1936), by Joseph McCabe, E. Haldeman-Julius, and Haldeman-Julius Company (page images at HathiTrust)
- A critical review of the latest claims that are supposed to give validity to the idea of God (Haldeman-Julius Co., 1936), by Joseph McCabe, E. Haldeman-Julius, and Haldeman-Julius Company (page images at HathiTrust)
- Joseph McCabe, fighter for freethought : fifty years on the rationalist front (Haldeman-Julius Publications, 1936), by Isaac Goldberg, E. Haldeman-Julius, Joseph McCabe, and Haldeman-Julius Company (page images at HathiTrust)
- Human gods (Dorrance and Company, 1939), by Ben Harris (page images at HathiTrust)
- Creeds not for secularists (Truth Seeker Company, 1906), by William Birney (page images at HathiTrust)
- Ruled by the tomb a discussion of free thought and free love (Harman, 1898), by Orford Northcote (page images at HathiTrust)
- Some mistakes of Moses (Freethought Press Assn., 1879), by Robert Green Ingersoll (page images at HathiTrust)
- The Reasoner (J. Watson, 1846), by John Burns, George Jacob Holyoake, and Universal Community Society of Rational Religionists (page images at HathiTrust)
- Am I an atheist or an agnostic? : a plea for tolerance in the face of new dogmas (Haldeman-Julius Pubs, 1949), by E. Haldeman-Julius, E. A McDonald, and Bertrand Russell (page images at HathiTrust)
- Gotthold Ephraim Lessing, der Apostel der Denkfreiheit. (E. Morgenstern, 1881), by Hermann Dederich (page images at HathiTrust)
- Der ṭeologish-poliṭisher ṭraḳṭaṭ (Farlag M. Yanḳoṿiṭsh, 1923), by Benedictus de Spinoza and N. Perlman (page images at HathiTrust)
- Ideen freisinniger protestantischer Pfarrer in neueren deutschen Romanen (F. Henke, 1919), by John Ludwig August Huchthausen (page images at HathiTrust)
- Freidenker, des Pionier ... Jahrgang 1885-Mar. 23, 1930 (Freidenker Pub. Co., 1885), by Free Thought League of North America (page images at HathiTrust)
- Christianity, a tale and a moral ([Printed by J. J. Little and Ives Company, 1931), by Peter Fireman (page images at HathiTrust)
- On the new era of society. (W. Strange, 1831), by Charles Rosser (page images at HathiTrust)
- Katolicyzm, modernizm i myśl wolna (Skł. gł. w księg. G. Centnerszwera, 1912), by Ignacy Radliński (page images at HathiTrust)
- Truth seeker tracts upon a variety of subjects, by different authors. (D.M. Bennett, Liberal and Scientific Publishing House., 1876), by De Robigne Mortimer Bennett (page images at HathiTrust)
- The darkness,the dawn and the day (Watts & Co., 1912), by J. C. Thomas and Rationalist Press Association (page images at HathiTrust)
- Die Ketzerbibel; Waffensammlung für den kämpfenden Freidenker gegen Aberglauben und Volksverdummung. Wie entstand die Welt? Was ist der Mensch? Was lehrte Christus und was taten die Pfaffen? Warum gibt er Sekten und Spiritisten? (Zentralverband der proletarischen Freidenker, 1922), by Hugo Efferoth (page images at HathiTrust)
- Pleas for free inquiry. (T. Scott, 1874), by Trinity College M. A. (page images at HathiTrust)
- Dictatorship over the intellect : an affirmation of the right to free thought and to free imaginative experience (Haldeman-Julius Publications, 1935), by Isaac Goldberg and E. Haldeman-Julius (page images at HathiTrust)
- Glossen zu Yves Guyot's und Sigismond Lacoix's "Die wahre Gestalt des Christenthums" (Étude sur les doctrines sociales du christianisme) : Nebst einem Anhang : Ueber die gegenwärtige und künftige Stellung der Frau (Expedition des "Vorwärts" :, 1892), by August Bebel, Th Glocke, and Max Bading (page images at HathiTrust)
- Alciphron: or. The minute philosopher. In seven dialogues. Containing an apology for the Christian religion, against those who are called free thinkers ... (Printed for J. Tonson, 1732), by George Berkeley (page images at HathiTrust)
- The works of Robert G. Ingersoll. (Dresden Pub. Co., 1903), by Robert Green Ingersoll (page images at HathiTrust)
- Freidenkertum. (Wien : R. Cerny, 1927., 1927), by Mikhail Aleksandrovich Bakunin (page images at HathiTrust)
- Collection of pamphlets about Freemasons and other societies in Ecuador, 1905-1925. (Quito, Ecuador : [publisher not identified - various imprints], 1905-1925., 1905), by Ecuador (page images at HathiTrust)
- A short history of freethought, ancient and modern. (Russell & Russell, 1957), by J. M. Robertson (page images at HathiTrust)
- The freethinker's text-book (London : C, /wattsm, 1876., 1876), by Charles Bradlaugh, Charles Watts, and Annie Besant (page images at HathiTrust)
- Fifty years of free thought; being the story of the Truth Seeker, with the natural history of its third editor. (The Truth Seeker Company, 1929), by George Everett Hussey Macdonald and Clarence Darrow (page images at HathiTrust)
- Bible of reason (London : H. Hetherington, 1837., 1837), by Benjamin F. Powell (page images at HathiTrust)
- Alciphron, or, The minute philosopher, in seven dialogues : containing an apology for the Christian religion, against those who are called Free-thinkers. (London : Printed for J. Tonson, 1732., 1732), by George Berkeley (page images at HathiTrust)
- The gods, and other lectures (Peoria, Ill. : C. P. Farrell, 1878, 1874., 1878), by Robert Green Ingersoll (page images at HathiTrust)
- Evangelical Alliance prize essay on infidelity : its aspects, causes and agencies (New York : R. Carter and Brothers, 1854., 1854), by Thomas Pearson (page images at HathiTrust)
- The creed of Christendom; its foundations and superstructure. (London : Trubner & Co., 1863., 1863), by William R. Greg (page images at HathiTrust)
- I don't know, do you?, by Marilla M. Ricker (Gutenberg ebook)
- Christianity in relation to Freethought, Scepticism, and Faith: Three discourses by the Bishop of Peterborough with special replies by Mr. C. Bradlaugh, by Charles Bradlaugh and William Connor Magee, contrib. by Robert A. Cooper and Edward Meyrick Goulburn (Gutenberg ebook)
- King Solomon's Goat, by George Willard Bartlett (Gutenberg ebook)
- A Handbook of Freethought: Containing in Condensed and Systematized Form a Vast Amount of Evidence Against the Superstitious Doctrines of Christianity, ed. by W. S. Bell (Gutenberg ebook)
- The Bible of Bibles; Or, Twenty-Seven "Divine" Revelations, by Kersey Graves and Lydia M. Graves (Gutenberg ebook)
- The Project Gutenberg Collection of Works by Freethinkers: With Linked On-line and Off-line Indexes to 157 Volumes by 90 Authors; Plus Indexes to 15 other Author's Multi-Volume Sets., ed. by David Widger (Gutenberg ebook)
- Christianity Unveiled: Being an Examination of the Principles and Effects of the Christian Religion, by Paul Henri Thiry Holbach, trans. by W. M. Johnson (Gutenberg ebook)
- The Freedom of Science, by Josef Donat (Gutenberg ebook)
- The Eliminator; or, Skeleton Keys to Sacerdotal Secrets, by Richard B. Westbrook (Gutenberg ebook)
- Theological Essays, by Charles Bradlaugh (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Complete Contents: Dresden Edition—Twelve Volumes, by Robert Green Ingersoll, ed. by David Widger (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 12 (of 12): Dresden Edition—Miscellany, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 11 (of 12): Dresden Edition—Miscellany, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 10 (of 12): Dresden Edition—Legal, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 09 (of 12): Dresden Edition—Political, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 08 (of 12): Dresden Edition—Interviews, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 07 (of 12): Dresden Edition—Discussions, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 06 (of 12): Dresden Edition—Discussions, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 05 (of 12): Dresden Edition—Discussions, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 04 (of 12): Dresden Edition—Lectures, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 03 (of 12): Dresden Edition—Lectures, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 02 (of 12): Dresden Edition—Lectures, by Robert Green Ingersoll (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Vol. 01 (of 12): Dresden Edition—Lectures, by Robert Green Ingersoll (Gutenberg ebook)
- The Gods: From 'The Gods and Other Lectures', by Robert Green Ingersoll (Gutenberg ebook)
- Mistakes of Moses, by Robert Green Ingersoll (Gutenberg ebook)
- Individuality: From 'The Gods and Other Lectures', by Robert Green Ingersoll (Gutenberg ebook)
- Humboldt: From 'The Gods and Other Lectures', by Robert Green Ingersoll (Gutenberg ebook)
- Heretics And Heresies: From 'The Gods and Other Lectures', by Robert Green Ingersoll (Gutenberg ebook)
- A Grammar of Freethought, by Chapman Cohen (Gutenberg ebook)
- Ludicrous Aspects Of Christianity: A Response To The Challenge Of The Bishop Of Manchester, by Austin Holyoake (Gutenberg ebook)
- Nature and the Gods: From "The Atheistic Platform", Twelve Lectures, by Arthur B. Moss (Gutenberg ebook)
- Is The Bible Worth Reading, and Other Essays, by L. K. Washburn (Gutenberg ebook)
- Comic Bible Sketches, Reprinted from "The Freethinker", by G. W. Foote (Gutenberg ebook)
- Bible Romances, First Series, by G. W. Foote (Gutenberg ebook)
- The Ghosts, and Other Lectures, by Robert Green Ingersoll (Gutenberg ebook)
- Men, Women, and Gods; and Other Lectures, by Helen H. Gardener, contrib. by Robert Green Ingersoll (Gutenberg ebook)
- Reminiscences of Charles Bradlaugh, by G. W. Foote (Gutenberg ebook)
- Arrows of Freethought, by G. W. Foote (Gutenberg ebook)
- Flowers of Freethought (Second Series), by G. W. Foote (Gutenberg ebook)
- Flowers of Freethought (First Series), by G. W. Foote (Gutenberg ebook)
- The Mistakes of Jesus, by William Floyd (Gutenberg ebook)
- The Works of Robert G. Ingersoll, Volume VIII.: Interviews, by Robert Green Ingersoll (Gutenberg ebook)
- Answer to Dr. Priestley's Letters to a Philosophical Unbeliever, by William Hammon and Matthew Turner (Gutenberg ebook)
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