Yale University Library is known for its unique collections of primary source materials. They can be found in a variety of formats (print, electronic, microfilm, ephermera) in a variety of places (Beinecke Rare Book & Manuscript Library, Manuscripts & Archives, microfilm collections and online databases). Because of this they can sometimes be challenging to locate. This web page provides some guidance on locating primary resources.
For more information about Manuscripts and Archives including (but not limited to) to their collections on AIDS , Harvey Fierstein, Gay Comics, Homophobia and Transgender, consult the Manuscripts and Archives (Repository) Sexuality Subject Guide.
The Beinecke Rare Book & Manuscript Library also has a rich array of resources to support LGBTQ scholarship. Contact them for more details.