1. Hassrick, Royal B.
History of Western American Art
. New York: Bison Books, 1987, pg. 36.
2. Hassrick, pg. 36.
3. Pohl, Frances K.
Framing America; A Social History of American Art.
New York: Thames and Hudson, 2002. pg. 156.
4. Haverstock, Mary Sayre
. Indian Gallery: The Story of George Catlin
. New York: Four Winds Press, 1973, pg. 53.
5. Hassrick, pg. 46.
6. Hassrick, pg. 96.
7. Hassrick, Peter.
Frederic Remington
. New York: Harry N. Abrams, Inc., 1973. pg. 22.
8. Hassrick, Peter, pg.162.