Other
Combined Arms Research Library: Atlas of the Sioux Wars:
An in-depth look at the Sioux Wars from 1862-1877. Included are maps for many topics discussed.
PBS
Pbs the West: The Battle of the Little Bighorn
This site from PBS is an excerpt from an 1893 book "Picture Writing of the American Indians" by Garrick Mallery which offers an eyewitness account of the Battle of Little Bighorn by the Lakota Chief Red Horse.
Ibis Communications
Eye Witness to History: The Battle of the Little Bighorn, 1876
This article provides detailed information on the Battle of the Little Bighorn, including a first-hand account from George Herendon, a scout for the Seventh Cavalry.