Keywords: PinkLincMcC.jpg Uncropped version of Image PinkertonLincolnMcClernand png Allan Pinkerton President Abraham Lincoln and Major General John A McClernand This photo was taken not long after the Civil War ™s first battle on northern soil in Antietam Maryland on October 3 1862 Pinkerton was the head of Union Intelligence Services at the time He also allegedly foiled an assassination attempt against Lincoln His wartime work was critical in Pinkerton ™s development which he later used to pioneer the American private detective industry when he formed the Pinkerton National Detective Agency Title Antietam Md Allan Pinkerton President Lincoln and Maj Gen John A McClernand; another view Gardner Alexander 1821-1882 photographer CREATED/PUBLISHED 1862 October 3 SUMMARY Photograph from the main eastern theater of the war Battle of Antietam September-October 1862 NOTES Reference Civil War photographs 1861-1865 / compiled by Hirst D Milhollen and Donald H Mugridge Washington D C Library of Congress 1977 No 0147 Title from Milhollen and Mugridge Forms part of Civil War glass negative collection Library of Congress Source LOC-image cwpb 03525 PD-old Pinkerton Lincoln and McClernand by Alexander Gardner |