ART 1 and 2

Search the collections of the National Gallery of Art: https://www.nga.gov/collection.html

Search the collection of the Museum of Modern Art: https://www.moma.org/collection/

Metropolitan Museum of Art (click on the magnifying glass to search the collection): https://www.metmuseum.org/

Search the collection of the Louvre Museum in Paris: https://www.louvre.fr/en/recherche-globale

Search by artist name or art movement along the left-hand side of the page:

http://www.artchive.com/ftp_site.htm

Artchive: http://www.artchive.com/