"On the Border with Crook" by John G. Bourke

From the back cover of the book:

"From 1870 to 1886 Captain John G. Bourke served on the staff of General George Crook, the man whom General Sherman described as the greatest Indian fighter the army ever had, a man whose prowess was demonstrated 'from British America to Mexico, from the Missouri River to the Pacific Ocean.' But On the Border with Crook is far more than a first-hand account of Crook's campaigns during the Plains Indian ears and in the Southwest. Alert, curious, and perceptive, Bourke succeeds in bringing to life the whole frontier scene. In crisp descriptions and telling anecdotes he re-creates the events and landscapes through which he moved; he sketches sharp action-pictures, not only of Crook and his fellow cavalrymen, but of such great leaders as Sitting Bull, Crazy Horse, and Geronimo; and perhaps most important, he shows us how General Crook was able to achieve his most remarkable victory -- how this man of war won and deserved the trust of the tribes he subjugated." 

Originally published in 1891, this copy was printed by Bison Books through the University of Nebraska Press in 1971.