Sources for Public Domain Material

Books

• Authorama
• Project Gutenberg
• Amazon Public Domain Books : Kindle Editions

Plays

• The Complete Works of William Shakespeare – MIT

Photographs

Library of Congress

• American Memory
• Daguerreotypes
• Farm Security Administration/Office of War Information Color Photographs
• Prints & Photographs Online Catalog

National Archives

• Online Public Access
• Digitized Historical Photographs
• World War II Photos

NASA

• The Gateway to Astronaut Photography of Earth
• Great Images in NASA library of images.
• Visible Earth
• NASA Technical Reports Server (NTRS)

Google

• Google Images – Photographs (Labeled for noncommercial reuse with modification)
• Google Images – Art (Labeled for noncommercial reuse with modification)
• Google Images – Symbols (Labeled for noncommercial reuse with modification)
• How to filter Google image searches by usage rights – CNET

Miscellaneous Sources

• Flickr: The Commons
• NOAA Photo Library
• USFWS National Digital Library
• Photography and Photos of the Day – National Geographic (Not in the Public Domain, but free to educators. Please make sure to read the “Terms of Service”. There are some restrictions.)

Search Tools

• Creative Commons Search
• Wikimedia Commons

Sheet Music

• California Sheet Music Project (Duggan)
• Chopin Early Editions – University of Chicago
• Music for the Nation: American Sheet Music, 1870-1885 – Library of Congress
• Mutopia Project
• The Sheet Music Project – Project Gutenberg
• Royalty Free Music – Musopen.org

Sound Recordings

• Royalty Free Music – Musopen.org