I: Bibliographical Resources

Arts and Humanities Citations Index, (Philadelphia: Institute for Scientific Information) [complicated and complete]
Bullough Vern, Dorr Legg, Barry Elcano et al, eds., An Annotated Bibliography of Homosexuality and Other Stigmatized Behavior, (New York: Garland, 1976)
Elcano, Barry, & Vern Bullough, Bibliography of Prostitution, ed. (New York: Garland, 1976)
Dynes Wayne, Homosexuality: A Research Guide, (New York and London: Garland, 1987)
Indispensable, wonderful and massive annotated bibliography of all areas of lesbian, gay, bisexual and transgendered studies. Does not cover fiction. An essential starting point for lesbian and gay studies. 4858 citations, most heavily annotated. But note this cannot be depended on now - much work has been done since its publication. Since 1987 a lot of new publications have transformed the field of LGBT history - look for Dyne's promised second edition.
Dynes, Wayne, ed., Encyclopedia of Homosexuality, 2 vols, (Garden City, NY: Garland, 1989)
Dynes, Wayne, and Stephen Donaldson, eds., History of homosexuality in Europe and America, (New York : Garland Pub., 1992)

Collected articles.
Fout, John C., A select bibliography on the history of sexuality, (Annandale-on-Hudson, N.Y : Committee on Lesbian and Gay History, Bard College, 1989)
Foster, Jeannette H., Sex Variant Women in Literature: A Historical and Quantative Survey 2nd ed., (New York: Vantage Press, 1956)(repr. Baltimore: Diana Press, 1975)
Geloof, kerk en Homoseksualiteit, (Amsterdam: NVIH-COC, 1984) 22 page bibliography of Dutch language books and articles.
Halsall, Paul, Lesbian, Gay, and Bisexual Catholic Bibliography, (http://pwh.evansville.edu/lgbcathbib.html Very larged bibliography on Christianity, Judaism, and Homosexuality. Herzer, Manfred, Bibliographie zur Homosexualitat : Verzeichnis des deutschsprachigen nichtbelletristischen Schrifttums zur weiblichen und mannlichen Homosexualitat : aus den Jahren 1466 bis 1975, (Berlin: Winkel, 1982)
Horner, Tom, Homosexuality and the Judeo-Christian Tradition: An Annotated Bibliography, (New York: ATLA - Bibliographical Series No. 5, 1981)

Humanities Index, (New York: H.W. Wilson, 1974-) [Complete and easy to use]
Journal of the History of Sexuality: Cumulative List of Articles International Medieval Bibliography, ed. R.S. Hoyt & P.H. Sawyer, (Leeds & Minneapolis: 1967- ) [Contains references in foreign languages. Easy to use. Needs a better indexing system]
Katz, Jonathan, A Gay Bibliography: Eight Bibliographies on Lesbianism and Male Homosexuality, (New York: 1975)
The Lesbian in Literature: A Bibliography 2nd ed., (Reno, Nevada: The Ladder, 1975)
Medieval Studies: A Bibliographical Guide, ed. Everrett V. Crosby et al, (New York: Garland, 1983)
Parker, William, ed., "Homosexuality and History: An Annotated Bibliography", Journal of Homosexuality 6:1/2 (1980), pp. 191-211 [123 entries. Well annotated]
Parker, William, ed., Homosexuality: Bibliography Supplement, (Metuchen, NJ.: Scarecrow Press, 1977)
Parker, William, ed., Homosexuality: A Selective Bibliography of Over 3000 Items, (Metuchen, NJ.: Scarecrow Press, 1971)
Porter, Jack Nusan, Sexual Politics in the Third Reich: The Persecution of the Homosexuals during the Holocaust: A Bibliography and Introductory Essay, (Newton, Mass.: The Spencer Press :8 Burnside Rd., 02161:, 1991), ISBN 0-932270, 21 p.
Recently Published Articles, pub. by American Historical Association [complete, but no index and so difficult and time-consuming]
Weinberg, M., & A. Bell, Homosexuality: An Annotated Bibliography, (New York: 1972)
Much old-fashioned psychological literaure reviewed.
Women in Western European History: A Select Chronological, Geographical and Topical Bibliography: Vol I: Antiquity to the French Revolution, (1982)
Young, Ian, The Male Homosexual in Literature, (Metuchen, NJ.: Scarecrow Press, 1975)
Also useful bibliographies below in Adam, Boswell, Bullough (Sexual Variance), Goodich (Unmentionable Vice), Greenberg, Greenberg & Bystryn and Kuster & Cormier.
Many academic journals now accept articles on homosexuality. Of special interest are:-
+ GLQ More literary and social "criticism than" history.
+ Journal of the History of Sexuality: Homepage Now the premier journal in the field.
+ Journal of Homosexuality Tends to reissue many volumes as edited article collections.
+ Journal of Sex Research
+ Signs