Copyright

This guide from the Cornell University library breaks down what works are currently in the public domain by year they were published.

Internet Archive is a non-profit library of millions of free books, movies, software, music, websites, and more.

LibriVox audiobooks are free for anyone to listen to, on their computers, iPods or other mobile device, or to burn onto a CD.

Project Gutenberg is a library of over 60,000 free eBooks. Choose among free epub and Kindle eBooks, download them or read them online. You will find the world's great literature here, with focus on older works for which U.S. copyright has expired.

A category of images from the "New York Times"' in the Public Domain in the United States of America — that were published prior to January 1, 1925

The photos are a sample of the more than 13 million images in some seven hundred collections in the museums, archives, and research centers. These collections contain photographs collected from outside sources in addition to those taken by Smithsonian staff, and represent a broad range of subjects and themes in the fields of art, history, culture, and science.