Courtesy of the Library of Congress, Prints & Photographs Division, LC-DIG-cwpb-04326 DLC.

Abraham Lincoln

Allan Pinkerton, President Abraham Lincoln, and Maj. Gen. John A. McClernand in Antietam, Maryland, on 3 October 1862 -- a few weeks after the Battle of Antietam. Photograph by Alexander Gardner.

See our biography of Abraham Lincoln