An auction house has a Civil War letter (at the appalling cost of $3,500) written by Frederick M. Crandal (1831-1911), a Union colonel who was in command of the 48th Regiment of U.S. Colored Troops during the Battle of Fort Blakely (April 9, 1865). Partial Transcript” “I recd your letter as this craft was sailing from Mobile. I was glad to hear that you still survive & that the ‘Bloody…