"The Anxious Moment." Poker game at Camp McKibbin, Marshall Hall, Maryland, 1893. With members of the 2nd, 3rd and 6th battalions of the District National Guard. View full size. Photograph by William Cruikshank.

Gen. John F. Hartranft reading the death warrant to the four condemned Lincoln assassination conspirators (Mrs. Surratt, Payne, Herold, Atzerodt) on the scaffold at Fort McNair, Washington. July 7, 1865. View full size. Photograph by Alexander Gardner. More execution photos at GhostCowboy.

Union soldiers on boxcars at railroad depot next to offices of the Atlanta Intelligencer during the city's occupation by General Sherman. View full size. Wet plate glass negative by George Barnard. Alternate view here.

Lewis Payne, seated and manacled, at the Washington Navy Yard about the time of his 21st birthday in April 1865, three months before he was hanged as one of the Lincoln assassination conspirators. View full size. Photograph by Alexander Gardner, probably taken aboard the ironclad U.S.S. Montauk or Saugus.

Three views of Lewis Payne (a.k.a. Lewis Powell) in April 1865, three months before his execution by hanging, wearing the same sweater. View full size. Photographs (wet collodion, glass plate) by Alexander Gardner.

The New York Public Library as seen from the intersection of East 42nd Street and Fifth Avenue. July 14, 1915. Copyright Office Collection. View full size.

Union Army guard at Price, Birch & Co. slave pen at Alexandria, Virginia, circa 1865. Detail of albumen print. View full size. Photograph by Andrew J. Russell.