Copyright content (audio, text, photographs, graphics, videos) is protected by copyright in the U.S. and other countries. You do not need a license for personal use. The following contains information on how to request permission to reuse content.

 We encourage websites to link and reblog. You may place a link on your web site to our content, or reblog via WordPress. However, the linking should not (a) suggest that promotes or endorses any third party’s causes, ideas, web sites, products or services, or (b) use content for inappropriate commercial purposes or in any way that is unlawful or harmful to any other person or entity. We reserve the right to withdraw permission for any link or reblog.

You do not need permission for individual use.  A limited amount of  content may be printed for your own personal, non-commercial use. In the event of such use, all copyright and other notices and clear attribution must be maintained.

The content may not be used, in whole or in part, in derivative works. No edits or alterations are allowed, including translations.

Please contact for reproduction requests, including, but not limited to:

  • academic use (except as noted below for K-12 educators)
  • commercial use
  • Advertising, marketing or promotional activities
  • Fundraising
  • Political activities

We reserve the right to refuse any request to reprint content.

K-12 Use: K-12 teachers may make up to 40 copies of content for one-time classroom use. Our copyright notice must be legible. For more than 40 copies or to use audio, please contact 

To request permission to reproduce content in ways not addressed above or to ask general questions about our permissions policy, please contact us at: