This site is licensed under the Attribution-Noncommercial-Share Alike 3.0 License. This refers primarily to the lesson plans, overview, and other original creations on the site. Under this license you (the user) are free to:
A. to Share -- to copy, distribute, and transmit the lesson plans, the overview, etc.
B. to Remix -- to adapt lesson plans, the overview, etc.
Under the following conditions:
* Attribution — You must give attribution to the creator of the portion of this site you are using. The creators of the different sections can be found on the About page.
* Noncommercial — You may not use the lesson plans, overview, etc. for any commercial purposes.
* Share Alike — If you alter, transform, or build upon what is on this site, you may distribute the resulting work only under the same or similar license to this one.
The full license is available here.
The images and resources stored on our web server are all within the public domain. As such, none of the images on this site are subject to copyright.
The digitization of public domain works has been found to be insufficient in variation or originality to be considered a new work (see Bridgeman Art Library, Ltd. v. Corel Corp., 36 F. Supp. 2d 191 (S.D.N.Y. 1999)); moreover the time and effort of digitization (commonly referred to as "the sweat of the brow" argument, does not give the parties involved with digitization control over the resulting image (see Feist Publications, Inc., v. Rural Telephone Service Co., 499 U.S. 340 (1991))
In short, everything written above means:
You can use anything on this site, as well as modify it, but if you distribute anything from this site, it needs to be released with these same conditions. The exceptions to this are the sources from the archives; those images can be used without restriction.