"McClellan had an extraordinary stroke of luck that upset Lee's plans. Barton Mitchell spotted a bulky envelope in a field east of town. Curious, he picked it up and discovered inside, wrapped around three cigars, a copy of Lee's Special Order 191 that had been lost by a careless courier. No Civil War general had a better chance to destroy the enemy's army before it could reunite."
(Civil War historian and author, James M. McPherson, speaking to a crowd at Sharpburg on September 16, 2012)
Joe Ryan Addresses The Civil War Historians