no edit summary
*[http://www.americanyawp.com/index.html The American Yawp]
''The American Yawp'' is a free online textbook. You can also get a paper copy of the book from Stanford University Press for $24.95 for each volume.
It describes itself as "A Massively Collaboration Open U.S. History Textbook." Essentially it is an open-source textbook. Historians essentially modeled the textbook on the open source model that has successfully used for numerous computer programs such as Linux, MediaWiki, Wordpress, and many more. In addition to the textbook, "The American Yawp" has an outstanding [http://www.americanyawp.com/reader.html Sourcebook] that can be used to expand on topics. Besides being an excellent textbook, it is an exceptional option to help reduce textbook costs because it can be accessed online for free.
* [https://edsitement.neh.gov/ EDSITEment! - National Endowment for the Humanities]