Plot: Brush up on American history with the Pawn Stars and revisit some of the greatest Civil War items to ever enter the shop: a Civil War veteran's rifle, a campaign ribbon from Lincoln's first election in 1860, a sterling-silver flask used in the Civil War, a lap desk made by the physician who treated John Wilkes Booth - Dr. Samuel Mudd, a soldier's engraved pocket watch, an 1864 Lincoln/Johnson campaign poster and a Confederate-era schoolbook containing mathematical problems that leave Rick puzzled