Gray, John S. Custer's Last Campaign: Mitch Boyer and the Little Bighorn Reconstructed. University of Nebraska Press, 1993. ISBN: 9780803270404.
5 1/2 x 9 inche, 446 pp. New. Paperback. 
"Easily the most significant book yet published on the Battle of the Little Bighorn."-Paul L. Hedren, Western Historical Quarterly.
"[Gray] has applied rigorous analysis as no previous historian has done to these oft-analyzed events. His detailed time-motion study of the movements of the various participants frankly boggles the mind of this reviewer. No one will be able to write of this battle again without reckoning with Gray"-Thomas W. Dunlay, Journal of American History .
"Gray challenges many time~honored beliefs about the battle. Perhaps most significantly, he brings in as much as possible the testimony of the Indian witnesses, especially that of the young scout Curley, which generations of historians have dismissed for contradictions that Gray convincingly demonstrates were caused not by Curley but by the assumptions made by his questioners . . . The contrasts in [this] book. . . restate the basic components of what still attracts the imagination to the Little Bighorn." - Los Angeles Times Book Review .
"Gray's analysis, by and large, is impressively drawn; it is an immensely logical reconstruction that should stand the test of time. As a contribution to Custer and Indian wars literature, it is indeed masterful."-Jerome A. Greene, New Mexico Historical Review .
John S. Gray was a distinguished historian whose books included the acclaimed Centennial Campaign: The Sioux War of 1876. Custer's Last Campaign is the winner of the Western Writers of American Spur award and the Little Bighorn Associates John M. Carroll Literary Award.