Execution of the Conspirators July 7, 1865 Alexander Gardner American, Scottish Alexander Gardner's intimate involvement in the events following President Lincoln's assassination would have challenged even the most experienced twentieth-century photojournalist. In just short of four months, Gardner documented in hundreds of portraits and views one of the most complex national news stories in American history. The U.S. Secret Service provided Gardner unlimited access to individuals and places unavailable to any other photographer. Free to retain all but one of his negatives-a portrait of Booth's corpse-Gardner attempted to sell carte-de-visite and large-format prints of the whole picture story. America, still wounded from the four-year war, was less than interested.The photographs of the execution of Mary Surratt, Lewis Paine, David Herold, and George Atzerodt on July 7, 1865, were, however, highly sought after by early collectors of Civil War ephemera beginning in the 1880s. This photo