History: President Abraham Lincoln, Major Allan Pinkerton, and Gen. John A. McClernand visit a camp at Sharpsburg, MD, 1862. [952 X 1200]

http://i.imgur.com/ttC5wGO.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/544d85/president_abraham_lincoln_major_allan_pinkerton/?utm_source=ifttt