Army officer who shot and killed Philip Barton Key, son of Francis Scott Key, because of Key's attentions to Mrs. Sickles. He was tried and acquitted on the grounds of a then-novel plea of a temporary mental aberration; he later became a Union general and lost a leg in defense of the famous Gettysburg Peach Tree salient. TLS signed 'D. E. Sickles,' one page, 8 x 9.5, September 10, 1910. Letter to new York Governor Charles Hughes In part, 'I would be very glad to have you appoint as associate for me...for the celebration of the Fiftieth Anniversary of the Battle of Gettysburg. In this relation allow me to suggest the name of General George B. Nichols...General Nichols took part in the battle of Gettysburg...and his regiment opened the battle of Gettysburg on the 1st of July.' In fine condition. RRAuction COA.