STC354302 Portrait of Allan Pinkerton, President Lincoln and Major J. A. McClernand, 1862 (sepia photo) by Brady, Mathew (1823-96) & studio; Private Collection; (add.info.: Taken on the 3rd October at the Battle of Antietam; Allan Pinkerton (1819-44) a Scottish detective and spy, founder of the Pinkerton National Detective Agency and head of the Union Intelligence Service 1861-62; Abraham Lincoln (1809-65) 16th President of the United States; John Alexander McClernand (1812-1900) lawyer, politician and Union General;); The Stapleton Collection; American, out of copyright.