| Call number | Item |
| H | Social Sciences (Go to start of category) |
| HQ | Family, Marriage, Sex and Gender (Go to start of category) |
| HQ21 .E56 1905 | ![[Info]](https://onlinebooks.library.upenn.edu/info.gif) The Evolution of Modesty; The Phenomena of Sexual Periodicity; Auto-Erotism (first volume in "Studies in the Psychology of Sex", third edition; Philadelphia; F. A. Davis Co., 1910), by Havelock Ellis (multiple formats at archive.org) |
| HQ21 .E582 | Studies in the Psychology of Sex (6 volumes of the third edition, 1927), by Havelock Ellis |
| HQ21 .F6 | Primitive Love and Love-Stories (1899), by Henry T. Finck (Gutenberg text) |
| HQ21 .F8 1920 | Three Contributions to the Theory of Sex (second edition; New York and Washington: Nervous and Mental Disease Pub. Co., 1920), by Sigmund Freud, trans. by A. A. Brill (Gutenberg text) |
| HQ21 .F8 1922 | Drei Abhandlungen zur Sexualtheorie (fifth edition, in German; Leipzig and Vienna: F. Deuticke, 1922), by Sigmund Freud (Gutenberg text) |
| HQ21 .K3 1911 | Love and Ethics (New York: B. W. Huebsch, c1911), by Ellen Key |
| HQ21 .K58 1922 | Vom Kosmogonischen Eros (in German; Munich: G. Müller, 1922), by Ludwig Klages (page images at HathiTrust; US access only) |
| HQ21 .K58 1926 | Vom Kosmogonischen Eros (second edition, in German; Jena: E. Diederichs, 1926), by Ludwig Klages (page images at HathiTrust; US access only) |
| HQ21 .M6 | Sexual Ethics: A Study of Borderland Questions (1914), by Robert Michels (multiple formats at archive.org) |
| HQ21 .T5 | Sex and Society (some essays in this edition from journal versions), by William Isaac Thomas (HTML at Brock) |
| HQ21 .T66 1959 | Modern Sex Techniques (New York: Archer House, c1959), by Robert Street (page images at HathiTrust) |
| HQ21 .V7 | Sex Perfection and Marital Happiness (New York: Dial Press, c1949), by Rudolf von Urban (page images at HathiTrust) |
| HQ21 .W5 | Sex and Character, by Otto Weininger (PDF and partial HTML with commentary at theabsolute.net) |
| HQ21 .W5 | Sex and Character (authorized translation from the sixth German edition; London: W. Heinemann; New York: G.P. Putnam's Sons, 1906), by Otto Weininger |
| HQ21 .W5 1903 | Geschlecht und Charakter: Eine Prinzipielle Untersuchung (in German; Vienna and Leipzig: W. Braumuller, 1903), by Otto Weininger |
| HQ21 .W5 1909 | Geschlecht und Charakter: Eine Prinzipielle Untersuchung (11th edition, in German; Vienna and Leipzig: W. Braumuller, 1909), by Otto Weininger |
| HQ21 .W5 1909 | Pol i Kharakter: Teoreticheskoe Izsli︠e︡dovanīe (Sex and Character translated into Russian; St. Petersburg: Kn-vo Posiev, 1909), by Otto Weininger (page images at HathiTrust; US access only) |
| HQ23 .C55 | Chrysalis Quarterly (with successor publication Chrysalis; 1991-1995) (full serial archives) |
| HQ23 .C55 | Chrysalis: The Journal of Transgressive Gender Identities (with predecessor publication Chrysalis Quarterly; 1995-1998) (full serial archives) |
| HQ27 .M330 | The Quality of Adolescent Sexual Experiences (1974), by Floyd Mansfield Martinson (HTML and PDF at ipce.info) |
| HQ27 .W34 2000 | Plain Talk: Addressing Adolescent Sexuality Through a Community Initiative (final evaluation report prepared for the Annie E. Casey Foundation; 2000), by Karen E. Walker and Lauren J. Kotloff (PDF with commentary at issuelab.org) |
| HQ31 | The Sexual Organs, Their Use and Abuse: The Subject Upon Which Men and Women Know the Least, Yet Ought to Know the Most: Guide to Man (Kitchener, ON; Buffalo: J.E.H. Hett, 1899), by J. E. Heller Hett (multiple formats at archive.org) |
| HQ31 .A85 1870 | The Book of Nature: Containing Information for Young People Who Think of Getting Married, on the Philosophy of Procreation and Sexual Intercourse, Showing How to Prevent Conception and to Avoid Child-Bearing; Also, Rules for Management During Labor and Child-Birth (New York: Wallis and Ashton, 1861), by James Ashton (multiple formats at archive.org) |
| HQ31 .C3 | Sex-Love, and its Place in a Free Society (second edition; Manchester, UK: Labour Press Society, 1894), by Edward Carpenter (page images at HathiTrust) |
| HQ31 .C3 1906 | Love's Coming-of-Age: A Series of Papers on the Relations of the Sexes (fifth edition (enlarged), 1906), by Edward Carpenter (HTML with commentary at sacred-texts.com) |