© Alexander Gardner, Jul. 7, 1865, Fort McNair, Washington, D.C.

The hanging hooded bodies of the four conspirators, Mary Surratt, Lewis Powell (Payne), David Herold, and George Atzerodt, executed on July 7, 1865 at Fort McNair in Washington, D.C. All four had been convicted of taking part in the conspiracy to assassinate Abraham Lincoln.