Gettysburg Living History portrayals performed by The Confederation of Union Generals with "Maj. Gen. Daniel Sickles," portrayed by John Griffiths
Pettigrew's Charge - Union Perspective, Gettysburg Battlewalk
No Place for Glory: Major General Robert E. Rodes and the Confederate Defeat at Gettysburg, PA Books
Spies, Scouts, and Secrets in the Gettysburg Campaign: How the Critical Role of Intelligence Impacted the Outcome of Lee's Invasion of the North, June–July 1863 - PA Books