impact: is a website about lesbian, gay, bisexual, transgender, queer, and heterosexual history, and, more generally, gender and sexual history. comprises elements of an almanac, archive, article, bibliography, book, encyclopedia, library, and museum. was produced in its first four years by the Center for Lesbian and Gay Studies (CLAGS), located at the City University of New York Graduate Center. is produced by University of Illinois at Chicago, under the direction of John D'Emilio. has collaborated with other LGBTQ history sites, archives, newspapers, magazines, museum projects, and art galleries, as well as interested researchers. The site collaborates with The Windy City Times and has also partnered with the Arcus Foundation to award recipients of the LGBTQ Local Histories Contest for excellent contributions to on local history topics. More information...

The website is placed before and after in the BestRef global ranking of the most important sources of Wikipedia.

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