Social Constructionism—a quick definition by Andrew Wikholm of gayhistory.com
"True Nature—A Theory of Human Sexual Evolution" by Christopher Gomes, Journal of the Gay and Lesbian Medical Association Vol. 4, No. 1, Spring 2000, and Vol. 4, No. 2, Summer 2000. "Lacking a sexual instinct, human sexuality is completely determined by individual experience. What are the implications of this? Heterosexuality is not genetic in human beings. No genes have ever been found as a cause for heterosexuality. Heterosexuality is learned. . . ."
"A History of Heterosexuality?" by Paul Halsall, Fordham University
"Through the Other End of the Telescope: How Might Today's Lesbian and Gay Movement Look from the Perspective of 1970s Activists?" by Peter Norman, May 12, 2013. "But the orthodox line [that sexual preferences were inborn] was a breathtaking betrayal of lesbian feminists, many of whom did indeed choose lesbianism in pursuit of the feminist goal of equality in intimate relationships, and who did indeed seek to 'promote homosexuality' on coherent and well-articulated political grounds. They were simply written out of the story."
"Is There a Straight Gene?" by Daryl Croke, from Workers' Liberty Australia Newsletter, October 2000
"What's a Modern Homosexual? An Introduction" by Andrew Wikholm of gayhistory.com
"Male Homosexuality: From Common to a Rarity" by Pierre Tremblay and Richard Ramsay, Faculty of Social Work, University of Calgary, from their collaborative work The Social Construction of Male Homosexuality and Related Suicide Problems: Research Proposals for the Twenty-First Century, 2000.
"Past Out" by Andrew Wikholm. A quick introduction to Michel Foucault, the radical queer philosopher whose three-volume work La Volente de Savoir [The History of Sexuality], first published in France in 1976, is generally considered the first book to propose that there was no such thing as heterosexuals or homosexuals until the sixteenth century at the earliest.
Introduction to Michel Foucault from PlanetOut.com
The History of Sexuality—a more detailed website on Michel Foucault and his three-volume theoretical treatise on the history of sexuality.
"Sexuality in Fifth-Century Athens" by Brian Arkins
"Homosexual Eros in Early Greece" by Paul Halsall, 1986
"'Being a Man' in the Ancient World" by Craig A. Williams, from his book Roman Homosexuality: Ideologies of Masculinity in Classical Antiquity, pp. 225-229, 1999.
"The Experience of Homosexuality in the Middle Ages" by Paul Halsall, 1988
The History of Sexology—from the Robert Koch Institut in Berlin, Germany.
Theoretical Foundations of Sexology—also from the Robert Koch Institut in Berlin, Germany.
"The 'Empire' Strikes Back: A Posttranssexual Manifesto" by Sandy Stone, 1993. This essay does an eye-opening job of deconstructing biological theories of transsexualism and the stereotypes these theories have traditionally depended upon.
"The Gay Liberation Movement" as chronicled by the Robert Koch Institut in Berlin, Germany
"Queer in Germany: Sexual Culture and National Discourses" by Robert Tobin, Walla Walla Washington, 1999
"The Homosexuality Factor In Prison Violence" by Pierre Tremblay, December 1992
"The Etiology of Homosexuality (and divorce and . . .)" by PS Bezanis, from Godel's Proof and The Human Condition—The Basic Essays.
"Homosexuality and Human Cultural Evolution" by Whitney Sanford
"Out of the Closet and Into the Network: Sexual Orientation and the Computerized Classroom" by Jonathan Alexander, from Computers and Composition, Vol. 14 No. 2, 1997.
Book Review by Marcus Collins of Jeffrey Weeks's book Making Sexual History, 2000.
"People with a History: An Online Guide to Lesbian, Gay, Bisexual and Trans* History" by Paul Halsall, Fordham University
GayHistory.com by Andrew Wikholm
The World History of Male Love
"Interview with David Halperin" by Laurel M. Bowman, from Favonius, Vol. 3, pp. 27-43, 1991.
"The Construction of Homosexuality" by Jeffrey Weeks, from his book Sex, Politics and Society: The Regulation of Sexuality since 1800, London: Longman, 1981.