Historical texts and discussion of LGBT people throughout historical periods and geographic regions.

A rich collection of images, primary source texts, oral histories, and bibliographies of historical material from the 1600s through the 20th century.

Medieval primary sources on sex and gender. Some have full text, others with information on holding institutions.

UC San Diego's guide on US LGBTQ history though US government actions and government documents.

Archive for ACT UP, an NYC advocacy group promoting awareness of and response to the AIDS epidemic.

University of Rochester's collection of images of AIDS educational posters from various countries.

Digital collections and information on holding institutions for trans history.

(Chicago) Museum for leather, kink, fetish, and BDSM history. Appointments available for visiting the archive.

(Chicago) Library/archives on LGBTQ+ history in Chicago and the Midwest. Open hours available for visits.

San Francisco-area archives on LGBTQ history. Digital collections are available.

Digital collections from the New York Public Library with a focus on NYC LGBT history.

Digital collections of LGBTQ oral history projects.

Indiana University's institute for study of human sexuality.