art museums (usa)

The Metropolitan Museum of Art, New York

http://www.metmuseum.org/

The Heilbrunn Timeline of Art History

http://www.metmuseum.org/toah/works/

The National Archives: Digital Vaults

http://www.digitalvaults.org/

The Art Institute of Chicago

http://www.artic.edu/

The San Francisco Museum of Modern Art: Artscope

https://www.sfmoma.org/experience/artscope/

The National Museum of African American History and Culture

https://nmaahc.si.edu/

The National Museum of American Latinos (in progress)

http://americanlatinomuseum.org/museums/directory/

National Museum of the American Indian

http://www.nmai.si.edu/

Smithsonian’s Museum of Asian Art: Freer/Sackler Galleries

http://www.asia.si.edu/

National Gallery of Art

https://images.nga.gov/en/page/show_home_page.html