I just finished reading William L. Shea’s Fields of Blood: The Prairie Grove Campaign.Fields of Blood: The Prairie Grove Campaign (Civil War America) I highly recommend this book.
The following is a list of other books associated with Guerrillas, Jayhawkers, Red Legs and the Civil War in the Trans-Mississippi that I recommend:
Quantrill and the Border Wars by William Elsey Connelley Quantrill and the Border Wars
A Savage Conflict: The Decisive Role of Guerrillas in the American Civil War by Daniel E. Sutherland (highly recommended) A Savage Conflict: The Decisive Role of Guerrillas in the American Civil War (Civil War America)
Jayhawkers: The Civil War Brigade of James Henry Lane by Bryce D. Benedict Jayhawkers: The Civil War Brigade of James Henry Lane
Jennison's Jayhawkers: A Civil War Cavalry Regiment and Its Commander by Stephen Z. Starr Jennison's Jayhawkers: A Civil War Cavalry Regiment and Its Commander (Civil War Paperbacks)
Pea Ridge: Civil War Campaign in the West by William L. Shea and Earl J. Hess Pea Ridge: Civil War Campaign in the West
The Devil Knows How to Ride: The True Story of William Clarke Quantrill by Edward E. Leslie The Devil Knows How To Ride: The True Story Of William Clarke Quantril And His Confederate Raiders
Black Flag: Guerrilla Warfare on the Western Border, 1861-1865 by Thomas Goodrich Black Flag: Guerrilla Warfare on the Western Border, 1861-1865: A Riveting Account of a Bloody Chapter in Civil War History
The Border Between Them: Violence and Reconcilliation on the Kansas-Missouri Line by Jeremy Neely The Border Between Them: Violence and Reconciliation on the Kansas-missouri Line
Wild Bill Hickok: The Man and His Myth by Joseph G. Rosa (highly recommended) Wild Bill Hickok: The Man and His Myth