National Gallery of Art

Site name: Natural Gallery of Art

Url: https://www.nga.gov

Rights statement: https://www.nga.gov/open-access-images/open-data.html

Material seen on site: One of the largest art museums in the country,  located in Washington D.C., the National Gallery of Art (NGA) has an extensive collection of American and Western European artwork from the Middle Ages to the present, with a special emphasis on works by masters like Picasso, Rembrandt, and Leonardo da Vinci.

Wikimedia Commons

Site name: Wikimedia Commons

Url: https://commons.wikimedia.org/wiki/Main_Page

Rights statement: https://commons.wikimedia.org/wiki/Commons:Village_pump/Copyright

Material seen on site: A massive library of freely useable photos, movies, and other media files are available via the Wikimedia Commons, a media repository that offers them under a variety of free licenses, including Creative Commons and public domain.

Prelinger Archives

Site name: Prelinger Archives

Url: https://archive.org/details/prelinger

Rights statement: https://www.panix.com/~footage/prelarch.html

Material seen on site: Over 3,000 publicly accessible films, videos, and rare and obscure industrial, educational, and amateur films from the 1930s to the 1970s are collected in the Prelinger Archives, which is a comprehensive online collection that can be viewed and reused for free under Creative Commons licenses, although not all films on the site have such licensing.

NASA Commons Site on Flickr

Site name: NASA on the Commons

Url: https://www.flickr.com/photos/nasacommons

Rights statement: https://www.nasa.gov/nasa-brand-center/images-and-media/

Material seen on the site: With over 140,000 NASA photographs available under Creative Commons licenses for public and media use, reuse, and modification, the NASA Commons Flickr account is a freely accessible online repository. It contains photographs taken by NASA of outer space.