A rare letter is for sale that President Abraham Lincoln wrote to one of his top generals at a turning point of the Civil War.
The Raab Collection in Philadelphia is selling the document. It's expected to fetch around $100,000.
Lincoln wrote the letter to Maj. Gen. George B. McClellan on Oct. 29, 1862 seeking a progress report.
It's the president's last note to McClelland before relieving the general of his command for not aggressively pursuing Confederate Gen. Robert E. Lee after the Battle of Antietam a month earlier.
McClellan's demotion set in motion a series of events that eventually led to Ulysses S. Grant commanding the Union army, a move that ultimately ended the war and brought victory to the North.