Robert Orrison

All That Can Be Expected : The Battle of Camden and the British High Tide in the South, August 16, 1780

Robert Orrison, Mark Wilcox

To Hazard All : A Guide to the Maryland Campaign, 1862

Robert Orrison, Kevin Pawlak

The Last Road North : A Guide to the Gettysburg Campaign, 1863

Robert Orrison, Dan Welch

A Single Blow : The Battles of Lexington and Concord and the Beginning of the American Revolution April 19, 1775

Phillip S. Greenwalt, Robert Orrison

A Want of Vigilance : The Bristoe Station Campaign, October 9–19, 1863

Bill Backus, Robert Orrison