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Copyright Policy

Welcome to The website is free to all users. By using this website, you agree to be bound by all of the terms of these policies and you are entering into a contract with us. The terms of that contract are the terms of these policies. is a project of the Leonore Annenberg Institute for Civics at the Annenberg Public Policy Center of the University of Pennsylvania. We reserve the right to change the terms of these policies at any time by posting the revised terms here. By continuing to use the website after changes to the policies are posted, you are agreeing to the revised terms.

Copyright and Use of Books: All books are free for viewing at, and may be downloaded only by teachers and students without charge.

Copyright and Use of Videos, Games and Interactive Timelines: All videos, games and interactive timelines are protected by copyright law. They are free for viewing at Videos may be downloaded for classroom use.

Copyright and Use of Materials from Others: respects the copyright of others. By using this site, you agree to do so as well. cannot grant permission for you to copy, distribute, display or use any material appearing on this site, or material to which we link, that is owned or copyrighted by others, including video or audio clips, documents, articles, photographs or images. If you believe that your copyrighted work has been reproduced on without authorization in a way that might constitute a copyright infringement, you may notify us at or contact us by mail at 202 South 36th St., Philadelphia, PA, 19104. We will investigate the matter promptly.

Linking: publishes links to websites maintained by third parties on an as-is basis and without warranties either express or implied. The existence of these links does not mean, the Annenberg Public Policy Center or the University of Pennsylvania approves or endorses the content on these web pages to which we link. If you wish to obtain, copy, distribute, display or use material from a third-party site, you should contact that site’s webmaster directly. If you discover a link on that is no longer valid, please notify us at