Sources for Public Domain Material

Books

• Authorama
• Project Gutenberg
• Amazon Public Domain Books : Kindle Editions (Kindle membership required)

Plays

• The Complete Works of William Shakespeare – MIT

Photographs

Library of Congress

• Daguerreotypes
• Farm Security Administration/Office of War Information Color Photographs

National Archives

• Online Public Access

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

• NOAA Photo Library
• USFWS National Digital Library

Search Tools

• Creative Commons Search (restrictions apply)
• Wikimedia Commons (restrictions apply)

Sheet Music

• Chopin Early Editions – University of Chicago