Voices From the Western Frontier
- Documents and newspapers preserved by a Lakota family, with searchable transcriptions, photographs and audio recordings. A history of the frontier and western states, the Indian Wars, and genealogical research.
- http://www.rootsweb.com/~nalakota/

Turner: The Frontier In American History
- Classic by Frederick Jackson Turner: The significance of the frontier in American History reprinted online.
- http://xroads.virginia.edu/~HYPER/TURNER/

Old West Library
- Publishers of first-person accounts (primary sources) of the history of the Old West.
- http://www.oldwestlibrary.com/OWL/oldwestlibrary.htm