Free thought -- Biography

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• Free thought
• Free thought -- History
• Biography

• Infidel Death-Beds, by G. W. Foote and A. D. McLaren (HTML at infidels.org)
• A biographical dictionary of freethinkers of all ages and nations / By J. M. Wheeler. (London : Progressive publishing company, 1889), by J. M. Wheeler (page images at HathiTrust; US access only)
• Infidel death-beds. "Idle tales of dying horrors", by G. W. Foote. (New York, The Truth seeker company, [1892]), by G. W. Foote (page images at HathiTrust)
• 400 years of freethought. (New York, The Truth seeker company, 1894), by Samuel Porter Putnam (page images at HathiTrust)

Items below (if any) are from related and broader terms.

• 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 (PDF at quotedstatements.com)
• A Defence of Free-Thinking in Mathematics, by George Berkeley (in Ireland)
• 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)
• Flowers of Freethought, by G. W. Foote (HTML at Freethought Archives)
• Free Thought and Official Propaganda (New York: B. W. Huebsch, 1922), by Bertrand Russell (multiple formats at Google; US access only)
• Ingersoll the Magnificent, by Joseph Lewis and Robert Green Ingersoll (HTML at positiveatheism.org)
• Is it God's Word?, by Joseph Wheless (text files at infidels.org)
• Is the Bible Worth Reading? And Other Essays, by L. K. Washburn (HTML at infidels.org)
• Lectures of Col. R. G. Ingersoll, by Robert Green Ingersoll
  • Volume I: Gutenberg text
  • Volume II: Gutenberg text
• 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)
• On the Improvement of the Understanding, by Benedictus de Spinoza, trans. by R. H. M. Elwes
  • HTML at Michigan
  • HTML with commentary at yesselman.com
  • 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; US access only)
• Searching for Truth (second edition; New York: Peter Eckler, c1902), by George Otis Draper (multiple formats at archive.org)
• Some Mistakes of Moses, by Robert Green Ingersoll (HTML at positiveatheism.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)
• The Ten Commandments, by Joseph Lewis (HTML at positiveatheism.org)
• Why I Left the Ministry and Became an Atheist, by G. Vincent Runyon (HTML at infidels.org)
• Why I Quit Going to Church, by Rupert Hughes (HTML at infidels.org)
• Free thought and official propaganda (New York, B. W. Huebsch, inc., 1922), by Bertrand Russell (page images at HathiTrust)
• The present religious crisis, (New York, G. P. Putnam's sons, 1882), by Augustus Blauvelt (page images at HathiTrust)
• Bible of reason ... (New York, Wright & Owen, 1831, '28), by Benjamin F. Powell (page images at HathiTrust)
• The Deist, or, Moral philosopher : being an impartial inquiry after moral and theological truths: selected from the writings of the most celebrated authors in ancient and modern times. (London : R. Carlile, 1819) (page images at HathiTrust)
• The creed of Christendom: (London, Trübner & co., 1875), by William R. Greg (page images at HathiTrust; US access only)
• 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. Tr. de l'anglois. (A Londres, 1717), by Anthony Collins (page images at HathiTrust)
• Discours sur la liberté de penser, par Mr. A. Collins. Tr. de l'anglois & augmenté d'une lettre d'un médecin arabe; avee l'examen de ces deux ouvrages, par Mr. de Crouzas. (A. Londres, 1766), by Anthony Collins (page images at HathiTrust)
• Theological essays. (London, A. and H. Bradlaugh Bonner, 1895), by Charles Bradlaugh (page images at HathiTrust; US access only)
• La tin des religions. (Paris, E. Flammarion, [1902]), by Auguste Dide (page images at HathiTrust; US access only)
• A retrospect of the religious life of England; or, the church, Puritanism, and free inquiry. By John James Tayler ... (London, Trübner & co., 1876), by John James Tayler (page images at HathiTrust; US access only)
• God and his book : the Bible : where did we get it, and what is it? / by Saladin. (London : W. Stewart, [18--]), by William Stewart Ross (page images at HathiTrust; US access only)
• The Freethinker's text-book. (London : Freethought Publishing Co., [18--]) (page images at HathiTrust; US access only)
• The secret of the East; or, The origin of the Christian religion, and the significance of its rise and deline. By Felix Oswald, M.D. (Boston, Index association, 1883), by Felix Leopold Oswald (page images at HathiTrust)
• Deity analyzed. In six lectures. By John R. Kelso ... (New York, Truth Seeker Co., [1890?]), by John R. Kelso (page images at HathiTrust)
• The freedom of science, (New York, J. F. Wagner, [c1914]), by Josef Donat (page images at HathiTrust)
• The Christian religion... (N.Y., 1882), by Robert Green Ingersoll (page images at HathiTrust)
• An open letter to Jesus Christ / by D. M. Bennett. (New York : The Truth Seeker Company, [18--]), by De Robigne Mortimer Bennett (page images at HathiTrust)
• Nature suffrage. (Buffalo, American association for the taxation of church property, 1917), by Charles Ralph Mabee (page images at HathiTrust)
• The inquirer's text-book : being the substance of thirteen lectures on the Bible / by Robert Cooper. (Boston : J.P. Mendum, [pref. 1864]), by Robert George Cooper (page images at HathiTrust)
• Theologisch-politische abhandlungen; neu übers. mit den von hrn. v. Murr hrsg. anmerkungen des verfassers zu diesem traktat, einer einleitenden vorrede und einigen anmerkungen begleitet, von Carl Philipp Conz ... (Stuttgart, J.F. Steinkopf, 1805), by Benedictus de Spinoza (page images at HathiTrust)
• Commentaries on Hebrew and Christian mythology / by Parish B. Ladd. (New York : The Truth Seeker Co., c1896), by Parish B. Ladd (page images at HathiTrust)
• Appetites and passions; their origin, and how to cast them out. A lecture, by Andrew Jackson Davis, at Dodworth's hall, N.Y. Jan. 25, 1863. Phonographically reported by Robert S. Moore. (New York : A.J. Davis, 1863), by Andrew Jackson Davis (page images at HathiTrust)
• Commentaries on Hebrew and Christian mythology / by Parish B. Ladd. (New York : P. Eckler, c1896), by Parish B. Ladd (page images at HathiTrust)
• The eliminator; or, Skeleton keys to sacerdotal secrets. By Richard B. Westbrook. (Philadelphia : Printed for the author by J.B. Lippincott company, 1894 [c1892]), by Richard Brodhead Westbrook (page images at HathiTrust)
• Occasional thoughts of Horace Seaver. From fifty years of free thinking. Selected from the Boston investigator. (Boston : J.P. Mendum, 1888), by Horace Seaver (page images at HathiTrust)
• Roots : a plea for tolerance. (London : R. Bentley, 1873), by George Robert Charles Herbert Pembroke (page images at HathiTrust; US access only)
• South Place discourses, (page images at HathiTrust; US access only)
• Free thought lectures! and poems! / by Jas. L. York, author and compiler. (San Jose, Calif. : A.S. York, 1888) (page images at HathiTrust)
• Free thought and official propaganda, delivered at South Place institute on March 24, 1922, by the Hon. Bertrand Russell... ([London] Watts & co. [etc.], 1922), by Bertrand Russell (page images at HathiTrust; US access only)
• A short history of freethought ancient and modern: by John M. Robertson. (London, Watts & co., 1914-15), by J. M. Robertson (page images at HathiTrust; US access only)
• Handboek van den vrijdenker. (Rotterdam, Commissie van Uitg. F.D.N.-Werken, 1922), by Ferdinand Domela Nieuwenhuis (page images at HathiTrust; US access only)
• Problèmes de la libre-pensée. Cinq conférences prononcées à l'aula de l'Université de Genève en mars-avril 1910, par A. -N. Bertrand ... (Paris, Fischbacher, 1910), by André Numa Bertrand (page images at HathiTrust; US access only)
• Doubts in dialogue / by Charles Bradlaugh. (London : Watts, 1909), by Charles Bradlaugh (page images at HathiTrust; US access only)
• A short history of freethought, ancient and modern. (London, Watts & Co., 1915), by J. M. Robertson (page images at HathiTrust; US access only)
• Spinoza, Theologisch-politischer Traktat / übertragen und mit Einleitung, Anmerkungen und Registern versehen von Carl Gebhardt. (Leipzig : F. Meiner, 1922), by Benedictus de Spinoza (page images at HathiTrust; US access only)
• A history of freedom of thought, by J. B. Bury ... (London, Williams and Norgate, [c1913]), by J. B. Bury (page images at HathiTrust; US access only)
• 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. By John Redman Coxe. (Philadelphia, G. S. Appleton: New York, Appleton & co., 1845), by John Redman Coxe (page images at HathiTrust)
• Faith and free thought : a second course of lectures delivered at the request of the Christian Evidence Society / with a preface by Samuel Wilberforce. (New York : A. D. F. Randolph, [1872]) (page images at HathiTrust)
• The Undewwood-Marples debate : commencing July 20, 1875 and continuing four evenings between B. F. Underwood and Rev. John Marples / reported by John T. Hawke. (New York : D. M. Bennett, 1877), by B. F. Underwood (page images at HathiTrust)
• Pocket theology. By Voltaire. (New York, Truth Seeker Co., [1914?]), by Voltaire (page images at HathiTrust)
• Arrows of freethought / by G.W. Foote. (London : H.A. Kemp, 1882), by G. W. Foote (page images at HathiTrust; US access only)
• Through agnostic spectacles / by Alexander Kadison. (New York : Truth Seeker Co., 1919), by Alexander Kadison (page images at HathiTrust)
• Essays on freethinking and plainspeaking. With introductory essays on Leslie Stephen and his works, by James Bryce and Herbert Paul. (London, Smith, Elder, 1907), by Leslie Stephen (page images at HathiTrust; US access only)
• Exposʹe of religious fraud : who, what, when, where / by L.F. Schrader. (Boston : Meador Pub. Co., [c1944]), by L. F. Schrader (page images at HathiTrust)
• Free thoughts on religion, the church, and national happiness, by B. M. (London, Printed and sold by T. Jauncy and J. Roberts, 1720), by Bernard Mandeville (page images at HathiTrust)
• Essays on freethinking and plainspeaking, by Leslie Stephen. With introductory essays on Leslie Stephen and his works, by James Bryce and Herbert Paul. (New York and London : G. P. Putnam's sons, 1905), by Leslie Stephen (page images at HathiTrust; US access only)
• Flowers of freethought, by G. W. Foote. (London, Pioneer Press, [1893-94]), by G. W. Foote (page images at HathiTrust; US access only)
• Revelations of Antichrist, concerning Christ and Christianity. (Boston, New York : J.P. Mendum and D.M. Bennett, 1879) (page images at HathiTrust; US access only)
• Half-hours with freethinkers / edited by John Watts and Iconoclast. (London : Austin & Co., 1865), by John Watts (page images at HathiTrust)
• Œuvres de Fréret. (A Paris : Chez Jean Servière ; Chez Jean-François Bastien, 1792), by Nicolas Fréret (page images at HathiTrust)
• Infidelity : its aspects, causes and agencies ... / by Thomas Pearson. (New York : Robert Carter & Bros., 1855), by Thomas Pearson (page images at HathiTrust)
• Rome or reason. A memoir of Christian and extra-Christian experiences. (New York, C. P. Somerby, [c1888]), by Nathaniel Ramsay Waters (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. Stenographically reported by I. Newton Baker. (Washington, D.C., C. P. Farrell, 1882), by Robert Green Ingersoll (page images at HathiTrust; US access only)
• Jesus and modern religion, (Chicago, The Open court publishing company; [etc. ], 1908), by Edwin A. R. Rumball-Petre (page images at HathiTrust)
• Faith or fact : illustrating conflicts between credulity and vitalized thought; superstition and realism; tradition and verity; dogma and reason; bigotry and tolerance; ecclesiastical error and manifest truth; theology and rationalism; miracle and immutable law; pious ignorance and secular intelligence; hypocrisy and sincerity; theocracy and democracy / by Henry M. Taber ; with preface by Col. Robert G. Ingersoll. (New York : Peter Eckler, Publisher, 1897), by Henry M. Taber (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, Ohio, from the 13th to the 21st of April, 1829, between Robert Owen of New Lanark, Scotland, and Alexander Campbell of Bethany, Virginia, reported by Charles H. Sims [i.e. Simms] stenographer, with an appendix written by the parties. (Bethany, Va., A. Campbell, 1829), by Robert Owen (page images at HathiTrust)
• A history of freedom of thought, (New York, H. Holt and company; [etc., etc., c1913]), by J. B. Bury (page images at HathiTrust)
• The Truth seeker collection of forms, hymns, and recitations. Original and selected. For the use of liberals. (New York, D. M. Bennett, 1877) (page images at HathiTrust)
• America vindicated from European theologico-political and infidel aspersions. (New York, Morgan & Co., 1855), by Thomas J. Vaiden (page images at HathiTrust)
• Departure ; or, Selections from jottings of twenty years / By Thomas Jefferson Rice. (Toledo : Blade Printing and Paper Co., 1875), by Thomas Jefferson Rice (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 evidences against Christianity / by John S. Hittell. (New York : C. Blanchard, 1857), by John S. Hittell (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 ... Reported by John T. Hawke. (New York : D. M. Bennett, 1876), by O. A. Burgess (page images at HathiTrust; US access only)
• Deacon Skidmore's letters. Written for the columns of The truth seeker, by Joel Skidmore [pseud.] ... (New York, D.M. Bennett, [1879]), by De Robigne Mortimer Bennett (page images at HathiTrust)
• Searching for truth. (New York Eckler, c1902), by George Otis Draper (page images at HathiTrust)
• The youth's liberal guide for their moral culture and religious enlightenment, by Prof. H.M. Kottinger ... (Milwaukee, Trayser Bros., 1877), by Hermann Marcus Kottinger (page images at HathiTrust)
• Messengers of truth; or, Pills for the pious. ([New York : National Tract Society]) (page images at HathiTrust)
• S. Ludvigh's Reden, Vorlesungen und prosaische Aufsaetze, im gebiete der Religion, Philosophie und Geschichte. (Baltimore, Verlag des Verfasser, 1850), by Samuel Ludvigh (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?" (New York, C. Blanchard, 1860), by Calvin Blanchard (page images at HathiTrust)
• Remarks upon a late Discourse of free-thinking: in a letter to N.N., by Phileleutherus Lipsiensis [pseud.] ... (London, 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 ... (Dresden, E. Pierson, 1908), by Franz Mach (page images at HathiTrust; US access only)
• The eliminator : or, Skeleton keys to sacerdotal secrets / by Richard B. Westbrook. (Philadelphia : Printed for the author by J.B. Lippincott, 1894), by Richard B. Westbrook (page images at HathiTrust)
• A trip to Rome, by J. B. Wilson. (Lexington, Ky., J. E. Hughes, [1905?]), by J. B. Wilson (page images at HathiTrust; US access only)
• Sixteen saviours or one? The Gospels not brahmanic. (Cincinnati, Thomson, 1879), by John T. Perry (page images at HathiTrust)
• Views of religion, collected by Rufus K. Noyes, M.D. (Boston, Mass., L.K. Washburn, 1906), by Rufus King Noyes (page images at HathiTrust)
• Der theologisch-politische Traktat. Neu übersetzt und mit einem biographischen Vorwort versehen von J. Stern. (Leipzig, P. Reclam, [1886?]), by Benedictus de Spinoza (page images at HathiTrust; US access only)
• Theologisch-politischer Traktat / Barunch de Spinoza ; übertragen und eingeleitet nebst Anmerkungen und Registern von Carl Gebhardt. (Leipzig : Dürr, 1908), by Benedictus de Spinoza (page images at HathiTrust; US access only)
• 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)
• Lettres à Sophie. : Contenant un examen des fondemens de la religion chrétienne, & diverses objections contre l'immortalité de l'ame. (À Londres : [s.n.], Dix-huitieme siècle), by Nicolas Fréret (page images at HathiTrust)
• El librepensamiento: doctrinas y hechos. Carta pastoral ... dirige al clero y fieles de la archidiócesis. (Valencia, Gimeno, 1912), by Victoriano Guisasola y Menéndez (page images at HathiTrust; US access only)
• The Christian mythology unveiled, in a series of lectures ... By a forty years' cultivator of the earth, and follower of nature. Printed privately for the author. ([London, 1842?]), by Logan Mitchell (page images at HathiTrust)
• Infidelity : its aspects, causes and agencies ... / by Thomas Pearson. (New York : R. Carter & Bros., 1860), by Thomas Pearson (page images at HathiTrust)
• The creed of Christendom : its foundations contrasted with its superstructure / by William Rathbone Greg. (London : Trübner, 1874), by William R. Greg (page images at HathiTrust; US access only)
• 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 / stenographically reported for the Truth seeker by I.N. Baker. (New York : Truth Seeker, c1889), by Robert Green Ingersoll (page images at HathiTrust)
• The creed of Christendom : its foundations contrasted with its superstructure / by William Rathbone Greg. (Boston, Mass. : Houghton, Osgood, & Co., 1879), by William R. Greg (page images at HathiTrust)
• Ideen freisinniger protestantischer pfarrer in neueren deutschen romanen, (St. Paul, Minn., F. Henke co., [1920]), by John Ludwig August Huchthausen (page images at HathiTrust; US access only)
• The will to believe : and other essays in popular philosophy / by William James. (New York : Longmans, Green, 1897), by William James (page images at HathiTrust)
• Theologisch-politische Abhandlung ... übers. und erläutert von J.H. v. Kirchmann. (Berlin, L. Heimann, 1870), by Benedictus de Spinoza (page images at HathiTrust)
• Přednášky professora T.G. Masaryka (V Chicagu : Vyd. nákladem Výkonného výboru Svazu svobodomyslných, 1907), by T. G. Masaryk (page images at HathiTrust; US access only)
• Freethought : is it destructive or constructive? : a symposium / by R.G. Ingersoll ... [et al.]. (New York : Truth Seeker Co., c1890) (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. Latest. (Chicago, Rhodes & McClure, 1898), by Robert Green Ingersoll (page images at HathiTrust)
• Popular Christianity : its transition state and probable development / by Frederick J. Foxton. (London : J. Chapman, 1849), by Frederick J. Foxton (page images at HathiTrust)
• Miscellaneous pamphlets, by Saladin [pseud. and others] (London, W. Stewart, [188-?-190-?]), by William Steward Ross (page images at HathiTrust; US access only)
• The works of Robert G. Ingersoll. (New York, Dresden Pub. co., C. P. Farrell, 1909-1911), by Robert Green Ingersol (page images at HathiTrust)
• Flowers of freethought. (London, R. Forder, 1893), by G. W. Foote (page images at HathiTrust; US access only)
• 400 years of freethought. (New York, The Truth seeker company, 1894), by Samuel Porter Putnam (page images at HathiTrust)
• The ethic of freethought; a selection of essays and lectures. (London, T. F. Unwin, 1888), by Karl Pearson (page images at HathiTrust; US access only)
• The nemesis of faith / by J. A. Froude. (Chicago : Belfords, Clarke, 1879), by James Anthony Froude (page images at HathiTrust)
• Infidelity : its aspects, causes and agencies ... / by Thomas Pearson. (New York : R. Carter & Bros., 1854), by Thomas Pearson (page images at HathiTrust)
• The clergy a source of danger to the American republic. By W. F. Jamieson. (Chicago, W. F. Jamieson, 1873), by William F. Jamieson (page images at HathiTrust)
• Remarks upon a late Discourse of free-thinking: in a letter to N. N., by Phileleutherus Lipsiensis [pseud.] (Cambridge [Eng.] Printed for C. Crownfield, 1725), by Richard Bentley (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. / By John Bentley. (London: : Printed for the author, and sold by R. Hunter (successor to Mr. Johnson) ..., 1819), by John Bentley (page images at HathiTrust)
• Theologisch-politische abhandlungen von Spinoza. Freye uebersetzung und mit anmerkungen begleitet von dr. J. A. Kalb. (München, J.A. Finsterlin, 1826), by Benedictus de Spinoza (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. By Abner Kneeland. (Boston, Office of the Investigator, 1831), by Abner Kneeland (page images at HathiTrust)
• Popular tracts / [Robert Dale Owen ... et al.]. (New-York : Published at the office of the Free Enquirer [by Robert Dale Owen], 1830) (page images at HathiTrust)
• Syntagma of the evidences of the Christian religion. Being a vindication of the manifesto of the Christian Evidence Society, against the assaults of the Christian Instruction Society through their deputy, J. P. S., commonly reported to be Dr. John Pye Smith, of Homerton. (London, Printed for the Author, and published by R. Carlile, 1828), by Robert Taylor (page images at HathiTrust)
• The freethinkers' manual / by Dr. Baur, H. F. Herbert, and a great number of scientists. (Philadelphia, Pa. : Radical Pub. Co., 1902), by John Baur (page images at HathiTrust)
• A short history of freethought ancient and modern: (London, Watts & co., 1906), by J. M. Robertson (page images at HathiTrust; US access only)
• The gods, and other lectures. (Washington, C. P. Farrell, 1878), 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; to which is added, Whence our Aryan ancestors? By George W. Brown, M.D. (Rockford, Ill., The author, [c1890]), by George W. Brown (page images at HathiTrust)
• The ethic of freethought and other addresses and essays, (London, A. and C. Black, 1901), by Karl Pearson (page images at HathiTrust; US access only)
• An abridgment and review of each chapter of the Bible and Testament: with quotations from the Douay Bible and some eminent writers. By Henry Aldworth ... (New York, The author, 1847), by Henry Aldworth (page images at HathiTrust)
• Speeches by Charles Bradlaugh / annotated by John M. Robertson. (London : Watts, [189-?]), by Charles Bradlaugh (page images at HathiTrust; US access only)
• Works. (New York : The Ingersoll league, 1929), by Robert Green Ingersoll (page images at HathiTrust; US access only)
• Darrow-Starr Debate : "Is the Human Race Getting Anywhere?" (Chicago : Maclaskey and Maclaskey, Shorthand Reporters, 1920), by Clarence Darrow (page images at HathiTrust; US access only)
• 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 .. (Hamburgi : Impensis Viduae Benj. Schilleri & Jo. Christoph. Kisneri, 1722), by Johann Lorenz Mosheim (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 / traduites de l'Anglois sur la septième édition par mr. N.N (A Amsterdam : chez J. Wetstein & G. Smith, 1738), by Richard Bentley (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 (Hamburgi [i. e. Amsterdam] : Apud Henricum Kunraht [sic] [i.e. Jan Rieuwertsz], 1670 [i.e. between 1674 and 1679]), by Benedictus de Spinoza (page images at HathiTrust)
• El buen-sentido fundado en la naturaleza / por un Cura despreocupado ; tráducelo y lo dedica á la ilustracion de sus compatriotas el ciudadano S.L.M.M.J (Lisboa : Impr. Liberal, 1821), by Cura despreocupado (page images at HathiTrust)
• The ethic of freethought : and other addresses and essays / by Karl Pearson, F.R.S. (London : Adam and Charles Black, 1901), by Karl Pearson (page images at HathiTrust; US access only)
• Free thoughts on religion, the church, and national happiness, by B. M. (London, Printed and sold by T. Jauncy and J. Roberts, 1720), by Bernard Mandeville (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. (Dublin, G. Risk, 1732), by George Berkeley (page images at HathiTrust)
• If I were God: a freethinker's faith, incorporating a discussion between the author and a Catholic priest, by Dr. William J. Robinson, with an introduction by Harry Elmer Barnes, PH. D. (New York, The Freethought press association, 1930), by William J. Robinson (page images at HathiTrust)
• Christianity and common sense. (London : Longman, Green, Longman, Roberts, & Green, 1863), by Willoughby Jones (page images at HathiTrust)
• The Triumph of Evolution : The Anti-Evolutionists Answered. (New York : 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. (Girard, Kan. : Haldeman-Julius Publications, 1948), by Joseph McCabe (page images at HathiTrust)
• Víra a věda : deset rozprav svobodomyslných / napsal Josef Jiří Král. (Chicago : A. Geringer, 1902), by Josef Jiří Král (page images at HathiTrust)
• Report of the two nights' debate, at Wigan, between Iconoclast [i.e. Charles Bradlaugh] and W. M. Hutchings. (London : Barker, [1861?]), by Charles Bradlaugh (page images at HathiTrust)
• Vrije gedachte : aanval door P. van Dorp; verweer, door Henrik Schutjes. (Amsterdam : Uitg. Weekblad "De Dageraad,", 1912) (page images at HathiTrust; US access only)
• Was Jesus an impostor? : a discussion between Agnes Rollo Wilkie and Arthur B. Moss / with introductory paper by Charles Watts. (London : Watts, [18--?]), by Agnes Rollo Wilkie (page images at HathiTrust; US access only)
• The logic of life, deduced from the principle of freethought / by G.J. Holyoake. (New York : A.K. Butts & Co., [1870?]), by George Jacob Holyoake (page images at HathiTrust)
• From Christian pulpit to secular platform. (London, Pioneer Press, 1903), by John Lloyd (page images at HathiTrust; US access only)
• 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. (London, Printed by J. Thompson, 1831) (page images at HathiTrust)
• Studying the Bible: or, Brief criticisms on some of the principal Scripture texts. By Elmina Drake Slenker. (Boston, J.P.Mendum, 1870), by Elmina Slenker (page images at HathiTrust)
• What is the Bible? By J. A. Ruth. (Chicago, The Open court Pub. Co.; London, K. Paul, Trench, Trübner & co., ltd., 1904), by John Adam Ruth (page images at HathiTrust; US access only)
• 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), by George Berkeley (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. and R. Tonson and S. Draper, 1752), by George Berkeley (page images at HathiTrust)
• A short essay upon free-thinking / by J. Addenbrooke. (London : Printed for Jonah Bowyer, 1714), by John Addenbrooke (page images at HathiTrust)
• Flowers of freethought : second series / by G.W. Foote. (London : G. Foote, 1894), by G. W. Foote (page images at HathiTrust; US access only)
• Christianity, its evidences, its origin, its morality, its history / by Annie Besant. (London : R. Forder, 1893), by Annie Besant (page images at HathiTrust; US access only)
• Flowers of freethought. (London : G. Foote, 1893), by G. W. Foote (page images at HathiTrust; US access only)
• The creed of Christendom; its foundations and superstructure. By William Rathbone Greg ... (London : J. Chapman, 1851), by William R. Greg (page images at HathiTrust)
• Christianity unveiled : being an examination of the principles and effects of the Christian religion / from the French of Boulanger, author of researches into the origin of oriental despotism by W.M. Johnson. (New York : [s.n.], 1835), by Paul Henri Thiry Holbach (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 the late Rev. John Bampton...By Adam Storey Farrar. (London, J. Murray, 1862), by Adam Storey Farrar (page images at HathiTrust)
• Moses Mendelssohn und die Denk- und Glaubensfreiheit im Judenthume; mit besonderer Beziehung auf die Confirmation. (Berlin, J. C. Huber, 1859), by Samuel Holdheim (page images at HathiTrust)
• The works of Robert G. Ingersoll / [edited by] C.P. Farrell. (New York : Ingersoll, c1900), by Robert Green Ingersoll (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 the late Rev. John Bampton. By Adam Storey Farrar. (New York, D. Appleton, 1863), by Adam Storey Farrar (page images at HathiTrust)
• The Republican. (London : R. Carlile [etc.]) (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 / by William M'Girr. (Pittsburgh : W.S. Haven, 1854), by William McGirr (page images at HathiTrust)
• The creed of Christendom : its foundations and superstructure / by William Rathbone Greg. (New York : C. Blanchard, 1855), by William R. Greg (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, between Robert Owen, of New Lanark, Scotland, and Alexander Campbell, of Bethany, Virginia. With an appendix by the parties. (London, R. Groombridge;, 1839), by Robert Owen (page images at HathiTrust)
• When Love Is Liberty and Nature Law. (London : W. Reeves, 1893), by John Badcock (page images at HathiTrust; US access only)
• Objections to Anarchism. (London : Freedom Press, 1921), by George Barrett (page images at HathiTrust; US access only)
• A Discourse on the True Meaning of the Bible as Applied to Morals and Laws. (London : St. Clements Press, 1912), by Tennessee Claflin Cook (page images at HathiTrust; US access only)
• Col. Robert G. Ingersoll as he is : a complete refutation of his clerical enemies' malicious slanders : the dishonest statements regarding himself and his family authoritatively denied, and the proof given / by E.M. Macdonald. (New York [N.Y.] : The Truth Seeker Company, [1896]), by Eugene Montague Macdonald (page images at HathiTrust)
• Lincoln the Freethinker. (New York : Lincoln Publishing Co., 1924), by Joseph Lewis (page images at HathiTrust)
• The works of Robert G. Ingersoll. (New York, C. P. Farrell, 1900), by Robert Green Ingersoll (page images at HathiTrust)
• Appendix to the Theological works of Thomas Paine. (London, Printed and published by M.A. Carlile, 1820), by Thomas Paine (page images at HathiTrust)
• The gods : and other lectures / by Robert G. Ingersoll. (New York : C. P. Farrell, 1889), by Robert Green Ingersoll (page images at HathiTrust)
• A Discussion of the Social Question. (Milwaukee : National Advance, 1891), by Juliet H. Severance (page images at HathiTrust; US access only)
• A Lecture on Religious, Political and Social Freedom. (Milwaukee : Godfrey and Crandall, 1881), by Juliet H. Severance (page images at HathiTrust; US access only)
• A Lecture on the Evolution of Life in Earth and Spirit Conditions. (Milwaukee : Godfrey and Crandall, 1882), by Juliet H. Severance (page images at HathiTrust; US access only)
• 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 / (New York : D. Appleton, 1863), by Adam Storey Farrar (page images at HathiTrust)
• Departure. (Toledo : Blade printing paper co., 1875), by Thomas Jefferson Rice (page images at HathiTrust)
• Radical discourses on religious subjects. : Delivered in Music hall, Boston, Mass.. (Boston : W. Denton, 1872), by William Denton (page images at HathiTrust)
• The Correspondent. (New York, [N.Y. : George Houston], 1827-1829) (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. (Boston [Mass.] : J.P. Mendum, 1887), by Abner Kneeland (page images at HathiTrust)
• Bible romances / by G.W. Foote. (London : Pioneer Press, [1922]), by G. W. Foote (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, n.p., 1900) (page images at HathiTrust; US access only)
• Is there a life after death? / by Marshall J. Gauvin. (New York : Peter Eckler Publishing Co., 1921), by Marshall J. Gauvin (page images at HathiTrust)
• Free thoughts concerning religion : or Nature versus theology / by Andrew Jackson Davis. (Rochester, N.Y. : Austin, 1911, c1872), by Andrew Jackson Davis (page images at HathiTrust)
• Rays of reason : or Religion refuted : containing facts and argument tending to prove the fallacy of a belief in religion and the Bible, yet favoring a belief in the existence of a God or ruling power / W.D. Hibbard. (Keokuk : Tristate Printing Co., 1887), by William D. Hibbard (page images at HathiTrust)
• Essays on freethinking and plainspeaking / by Leslie Stephen. (New York ; London : G.P. Putnam's Sons, 1877), by Leslie Stephen (page images at HathiTrust; US access only)
• Man's best friend, or, The evils of pious frauds / by Sampson Arnold Mackey. (Norwich : R. Walker for the author, 1826), by Sampson Arnold Mackey (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 / by a free-thinker. (London : Printed for R. Carlile, 1827) (page images at HathiTrust)
• The evidences against Christianity / by John S. Hittell. (San Francisco [Calif.] : J.S. Hittell, 1856), by John S. Hittell (page images at HathiTrust)
• Report of the International Congress for Progressive Thought : and of the 27th annual Congress of the American Secular Union and Freethought Federation, held in St. Louis, Mo., Oct. 15-20, 1904. (New York : Published for the Union and Federation by the Truth Seeker Co., [1904?]), by International Congress for Progressive Thought, contrib. by Congress of the American Secular Union and Freethought Federation 1904 : St. Louis) (page images at HathiTrust)
• Libre Examen. (Paris : Edition du Groupe d'Etudes Scientifiques, 1907), by Paraf-Javal (page images at HathiTrust; US access only)
• Antinatale. (New York : Biblioteca Novatore, 1910), by Libero Tancredi (page images at HathiTrust; US access only)
• Freedom of Thought and of Speech. (Chicago : Charles H. Kerr, 1892), by William Mackintire Salter (page images at HathiTrust; US access only)
• Theodore Schroeder's Use of the Psychologic Approach to Problems of Religion, Law Criminology, Sociology and Philosophy : A Bibliography. (Cos Cob, Conn., the author, 1922), by Nancy Eleanor Sankey-Jones (page images at HathiTrust; US access only)
• A Unique Heathen : To Which is Now Added Theodore Schroeder on the Erotogenesis of Religion. A Bibliography. (Cos Cob, Conn., n.p., 1922), by Nancy Eleanor Sankey-Jones (page images at HathiTrust)
• A Cold Enthusiast. (Riverside, Conn., n.p., 1913), by Hutchins Hapgood (page images at HathiTrust)
• Determinism, Conduct and Fear Psychology. (New York, n.p., 1919), by Theodore Schroeder (page images at HathiTrust)
• The Evolution of Marriage Ideals. (New York : Edwin C. Walker, 1905), by Theodore Schroeder (page images at HathiTrust)
• Heavenly Bridegrooms : An Unintentional Contribution to the Erotogenetic Interpretation of Religion. (New York, n.p., 1918), by Theodore Schroeder (page images at HathiTrust)
• Intellectual liberty and literary style / by Theodore Schroeder. (Chicago : [s.n.], 1920), by Theodore Schroeder (page images at HathiTrust)
• Voltaire, the Infidel : An Essay on his Work as a Free Thinker, Reformer, and Enemy of Priestcraft. (N.l., n.p., 1880), by Thomas Walker (page images at HathiTrust; US access only)
• Biography of Victoria C. Woodhull. (New York : Golden Age, 1871), by Theodore Tilton (page images at HathiTrust)
• Bibliography of Theodore Schroeder on the Psychology of Religion and the Erotogenetic Interpretation of Mysticism. (Cos Cob, Conn., the author, 1934), by Nancy Eleanor Sankey-Jones (page images at HathiTrust)
• About the Intellectual Work of Theodore Schroeder. (Cos Cob, Conn., n.p., 1944), by Theodore Schroeder (page images at HathiTrust)
• Secularism and Religiosity. (N.l., the author, 1945), by Theodore Schroeder (page images at HathiTrust)
• Faith and free thought. A second course of lectures delivered at the request of the Christian Evidence Society. With a preface by Samuel Wilberforce. (London, Hodder and Stoughton, 1872) (page images at HathiTrust)
• Eighty Years a Rebel : Autobiography. (Girard, Kan. : Haldeman-Julius Publications, 1947), by Joseph McCabe (page images at HathiTrust)
• Christianity cross-examined, (New York, Arbitrator press, [c1941]), by William Floyd (page images at HathiTrust)
• The works of Robert G. Ingersoll ... (New York, The Dresden publishing co., C. P. Farrell, 1909-11), by Robert Green Ingersoll (page images at HathiTrust)
• The ethic of freethought; (London, T. F. Unwin, 1888), by Karl Pearson (page images at HathiTrust)
• Unbelief in the eighteenth century as contrasted with its earlier and later history. Being the Cunningham lectures for 1880, by John Cairns ... (Edinburgh, A. and C. Black, 1881), by John Cairns (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 / by J.P. Gilmour. (London : Printed by G. Standring, [1897?]), by James Pinkerton Gilmour (page images at HathiTrust)
• Speeches / by Charles Bradlaugh ; annotated by John M. Robertson. (London : B. Bonner, 1895), by Charles Bradlaugh (page images at HathiTrust)
• Science and secularism / by Edward B. Aveling. (London : Freethought, 1882), by Edward B. Aveling (page images at HathiTrust)
• The futility of prayer / by G. W. Foote. (London : Freethought Pub. Co., 1879), by G. W. Foote (page images at HathiTrust)
• Fifty years of freethought : or, a glance at past experience : a Sunday lecture delivered to the Liverpool Branch of the National Secular Society, in Camden Hall, Camden Street, October 29th, 1882 / by William Hitchman. (London : Watts, [1882]), by William Hitchman (page images at HathiTrust)
• A biographical dictionary of freethinkers of all ages and nations. By J.M. Wheeler. (London : The Pioneer Press, 1889), by Joseph Mazzini Wheeler (page images at HathiTrust)
• Selected prose works of Shelley / Percy Bysshe Shelley ; with foreword by Henry S. Salt. (London : Watts, 1915), by Percy Bysshe Shelley (page images at HathiTrust)
• American heretics and saints, by Wallace P. Rusterholtz. (Boston, Manthorne & Burack, 1938), by Wallace P. Rusterholtz (page images at HathiTrust)
• A grammar of freethought / by Chapman Cohen. (London : Pioneer Press, 1921), by Chapman Cohen (page images at HathiTrust; US access only)
• Qu'est-ce que la théophilanthropie. Introduction et appréciation par Henri Carle. (Paris, Aux bureaux du journal La Libre Conscience, 1868), by J.-B. Chemin-Dupontès (page images at HathiTrust)
• Che Cosa e la Religione. (Chieti, Italia : Editrice C. di Sciullo, 1906), by Ludovico M. Caminita (page images at HathiTrust; US access only)
• The creed of Christendom: (London, Trubner & co., 1883), by William R. Greg (page images at HathiTrust)
• Interview with the devil / by G. W. Foote. (London : R. Forder, 1893), by G. W. Foote (page images at HathiTrust)
• Searching for truth. (London : Watts & Co., 1902), by George Otis Draper (page images at HathiTrust; US access only)
• Die Freiheit der Wissenschaft; ein Gang durch das moderne Geistesleben. (Innsbruck : F. Rauch, 1910), by Josef Donat (page images at HathiTrust; US access only)
• Lectures and essays (a selection) By Colonel R.G. Ingersoll (second series) (London, Watts & co., 1905), by Robert Green Ingersoll (page images at HathiTrust)
• The Freedom of Science, by Joseph Donat (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)
• Men, Women, and Gods: And Other Lectures, by Helen H. Gardener, contrib. by Robert Green Ingersoll (Gutenberg ebook)
• Humanity's Gain from Unbelief: Reprinted from the "North American Review" of March, 1889, by Charles Bradlaugh (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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