Civil War for the day

Abraham Lincoln, flanked by Alan Pinkerton to his right and General John McClernand (though Rico says he had to see the same photo in the current Time book Abraham Lincoln, An illustrated history of his life and times to know who the general was; he's not your everyday Civil War general) to his left. The photo was taken by Alexander Gardner at Sharpsburg, Maryland in October of 1862, just after the battle at Antietam Creek.