Museum List with Websites  
The Cloisters http://www.metmuseum.org/collections/department.asp?dep=7
The Frick Collection and Art Reference Library http://www.frick.org/
The Metropolitan Museum of Art http://www.metmuseum.org/home.asp
Museum of American Folk Art http://www.folkartmuseum.org/
Museum of Jewish Heritage http://www.mjhnyc.org/
Museum of Modern Art http://www.moma.org/
Bronx Museum of the Arts http://www.bxma.org/
Brooklyn Museum of Art http://www.brooklynmuseum.org/
Cooper-Hewitt, National Design Museum, Smithsonian Institution http://ndm.si.edu/
El Museo del Barrio http://www.elmuseo.org/
Forbes Magazine Galleries http://www.forbesgalleries.com/
International Center of Photography http://www.icp.org/
American Museum of Natural History http://www.amnh.org/
The Jewish Museum http://www.jewishmuseum.org/
New Museum of Contemporary Art http://www.newmuseum.org/
Pierpont Morgan Library http://www.morganlibrary.org/
Solomon R. Guggenheim Museum http://www.guggenheim.org/new_york_index.html
Studio Museum in Harlem http://www.ny.com/museums/studio.museum.in.harlem.html
Whitney Museum of American Art http://www.whitney.org/