LGBTQ History in the United States: Scholarship

Although long considered a "niche" of historical scholarship, the history of LGBTQ people in the U.S. is today a well-researched and well-respected subfield of American history. Here are some seminal and some newer titles that offer starting points for further study:
In addition to these books, also check the following databases for journal articles, documentaries, etc.:

Primary Sources for LGBTQ History

To dig into primary sources, try some of the following digital archives and collections: