The conspirators included a woman who ran a boardinghouse where the assassination plot was "hatched."
An anticipated pardon that might have been granted by President Andrew Johnson never came.
The ringleader, John Wilkes Booth, after having been surrounded in a tobacco barn in Virginia, died just 2 weeks after Lincoln's murder.
Mary Surratt, who wore a black dress, bonnet and veil, led the procession of prisoners out of their cells at 1:15 p.m. local time.
They walked by "their own freshly dug graves, each with a raw pine coffin beside it" and then "slowly climbed the scaffold."
Soldiers tied the prisoner's hands behind their backs and put white hoods on their heads.
At 2 p.m., the hinged trap supports on the scaffold were knocked away "and the prisoners plunged down."
"The Civil War: The Assassination, Death of a President," Time-Life Books, by Champ Clark and the Editors of Time-Life Books, Alexandria, Virginia, 1987.
"Mary was a smart woman who made choices and she paid for those choices...but her trial was a travesty."