Video: Aug 22, 1862 (at 39:16)

(Friday, August 22, 1862, during the American Civil War) — U.S. President Abraham Lincoln responded to an Aug. 20 editorial by Republican editor Horace Greeley of the highly influential New York Tribune, demanding a more aggressive attack on the Confederacy and faster emancipation of the slaves by describing the limits imposed by his duty as president to save the Union.

Lincoln wrote: “My paramount object in this struggle is to save the Union, and is not either to save or to destroy slavery. If I could save the Union without freeing any slave I would do it, and if I could save it by freeing all the slaves I would do it; and if I could save it by freeing some and leaving others alone I would also do that.”

Unknown to Greeley, Lincoln had already drafted a preliminary Emancipation Proclamation, which he had determined to issue after the next Union military victory.