NYH258385 Abraham Lincoln with Allan Pinkerton and Major General John A. McClernand, 1862 (b/w photo) by Gardner, Alexander (1821-82); Collection of the New-York Historical Society, USA; (add.info.: Abraham Lincoln (1809-65); 16th President of the United States; John Alexander McClernand (1812-1900); Allan Pinkerton (1819-84); in his role as head of Union Intelligence Services during the war, Pinkerton foiled an assassination attempt against Lincoln; this photo was taken not long after the Civil War\'s first battle on northern soil in Antietam, Maryland on October 3, 1862; American Civil War (1861-65);); 穢 New York Historical Society ; American, out of copyright.