- Boring, Mel. Incredible Constructions and the People Who Build Them. New York: Walker and Company, 1984.
- National Archives: Treaty for the Black Hills
- Image Source: Mount Rushmore - By Rise Studio, Rapid City, S. Dak. Copyright not renewed. (Library of Congress) [Public domain], via Wikimedia Commons
- Eyewitness to History: The Battle of the Little Bighorn, 1876
- Thomas, William David. Symbols of American Freedom: Mount Rushmore. New York: Infobase Publishing, 2010. Book.
- Kenney, Karen Latchana. Mount Rushmore. Edina, Minnesota: ABDO Group, 2011. Book
- Mount Rushmore National Memorial: Lincoln Borglum Museum