The following publications contain information about Charles A. Varnum:
Article: "War With the Sioux: Indian Fights and Fighters; Part 1 – The Yellowstone Expedition in 1873 and the Beginnining of Custer's Last Fight" by Cyrus Townsend Brady • Pearson's Magazine • August 1904.
Article: "Custer's Last Battle" by Charles King, Introduction by Paul L. Hedron • Annuals of Wyoming, Vol. 48, Spring 1976.
Photographs:
Grave Marker of Charles A. Varnum, Presidio National Cemetery,
San Francisco, California, by John A. Doerner • Little Big Horn Associates Newsletter, Vol. XXIV, No. 5, May 1990.
Article: "Varnum
and Benteen ... Or Is It?" by Randy Johnson • Little Big Horn Associates Newsletter, Vol. XXVII, No. 10, December 1993.
Photograph:
Varnum, Bronson, Benteen, and Hodgson, courtesy of the
Little Bighorn Battlefield National Monument • Little Big Horn Associates Newsletter, Vol. XXVII, No. 10, December 1993.
Cover Illustration:
"Portrait of Charles Albert Varnum" by Michael Nunnally • Little Big Horn Associates Newsletter, Vol. XL, No. 2, March 2006.
Article:
"The Location of Varnum's Lookout (a.k.a. the Crow's Nest)" by Vern Smalley • Little Big Horn Associates Newsletter, Vol. XL, No. 2, March 2006.
Article: "Charles A. Varnum and the Road to Little Big Horn" by C. Lee Noyes • Greasy Grass, Journal of the Custer Battlefield Historical & Museum Association, Vol. 27, May 2011.