Here is the webpage for a museum, well sort of, in NYC.  It is
associated with the Lesbian and Gay Community Services Center in New York
City.  At minimum, it'll be a link.
        Lesbian and Gay history, in most museums, is still in the closet.  It
wasn't even a topic or a hint at last weekend's National Council on Public
History annual meeting (which is a terrific organization that tries).

http://www.gaycenter.org/

Good Luck,
Mike Radice
The Union Institute