This September 1862 photo provided by the Library of Congress shows Allan Pinkerton on horseback during the Battle of Antietam, near Sharpsburg, Maryland. Before the outbreak of war, he had founded the Pinkerton National Detective Agency. In 1861, he famously foiled an alleged plot to assassinate president-elect Lincoln, and later served as the head of the Union Intelligence Service -- the forerunner of the U.S. Secret Service. The size of our photos prints are 8.5” x 11” Photos are printed on UltraPro Satin Photo Paper Prints are suitable for framing, matting, or mounting Your prints will last a lifetime with proper care Photos are reproductions of old photos so there may be some minor defects colors may vary somewhat due to the difference in computer monitors. There may be some cropping on the photo. We feel you will be pleased with your photo or photos. We accept returns within 30 days of your purchase. We guarantee our prints 100% if you are not pleased we will refund your full purchase price. We ship within 2 business days We ship your in rigid mailers so your photo arrive undamaged Thank you for looking in our store We obtain our photos from a variety of sources. All photos are Public Domain We do not own or claim copyright to any photos offered The size of our photos prints are 8.5” x 11” Photos are printed on UltraPro Satin Photo Paper Prints are suitable for framing, matting, or mounting Your prints will last a lifetime with proper care Photos are reproductions of old photos so there may be some minor defects colors may vary somewhat due to the difference in computer monitors. There may be some cropping on the photo. We feel you will be pleased with your photo or photos. We accept returns within 30 days of your purchase. We guarantee our prints 100% if you are not pleased we will refund your full purchase price. We ship within 2 business days We ship your in rigid mailers so your photo arrive undamaged Thank you for looking in our store We obtain our photos from a variety of sources. All photos are Public Domain We do not own or claim copyright to any photos offered