Copyright: Public Domain

• Facts and Ideas
• Works created by the federal government and federal employees working within the scope of their job
• Work informational in nature with no original authorship
• Works in the public domain

Open Access titles are still copyrighted materials either owned by the publisher or the author. You should treat them the same way as other materials.

Creative Commons is designed to facilitate the sharing of materials, especially those on the Internet. The Creative Commons "contracts" allow you, the author, to retain copyright while giving permission to others to use the material for non-profit purposes.

Currently, the default term is life of the author plus 70 years.

• All works published in the U.S. before 1923
• All works published with a copyright notice from 1923 through 1963 without copyright renewal
• All works published without a copyright notice from 1923 through 1977
• All works published without a copyright notice from 1978 through March 1, 1989, and without subsequent registration within 5 years

• Librivox, audio books
• New York Times Public Domain Archives
• Prelinger Archives; a vast collection of advertising, educational, industrial, and amateur films
• Project Gutenberg, books
• Public Domain Movies
• Smithsonian Institution Public Domain Images

• Copyright has expired
• Copyright owner failed to follow renewal rules
• Copyright owner deliberatly places the work in the Public Domain
• The type of work is not protected