In April 1865, about six weeks after graduating from
Bellevue Hospital Medical College in
New York City, Leale had charge of the Wounded Commissioned Officers' Ward at the United States Army General Hospital in Armory Square,
Washington, DC. A few days before Lincoln's assassination, Leale saw Lincoln give his last public address and was intrigued by Lincoln's facial features. Soon after, learning that Lincoln was going to Ford's Theatre to see the play
Our American Cousin, he attended as wellnot to see the play, but to study Lincoln's face and facial expressions. He arrived late and was unable to get a seat with an unhindered view of Lincoln; instead he sat near the front about forty feet away. After
John Wilkes Booth shot Lincoln, Leale rushed to Lincoln's box where he briefly examined
Henry Rathbone, whom Booth had stabbed in the arm. He then saw Lincoln slumped in his armchair supported by
Mary Todd Lincoln; Lincoln was unresponsive, barely breathing with no detectable pulse. Initially thinking Lincoln had been stabbed, he laid him on the floor and, with bystander William Kent, cut off Lincoln's collar and opened his coat and shirt in search of wounds. After realizing that Lincoln's eyes were dilated, Leale found the bullet wound at the back of the head. Leale was unable to locate the bullet, which was deep in Lincoln's head, but after he dislodged a blood clot Lincoln's breathing improved; he found that regular removal of clots maintained Lincoln's breathing. He also gave artificial respiration. However, Leale knew from the beginning what would happen, and pronounced his assessment that Lincoln's wound "was mortal." By this time other surgeons from the audience had arrived, as well as actress
Laura Keene, who cradled Lincoln's head, while Leale announced that Lincoln wasn't going to survive. Fearing that Lincoln would not survive a carriage ride back to the White House, Leale ordered that Lincoln be moved to someplace nearby. He, along with two doctors and four soldiers, picked Lincoln up and slowly took him across to the
Petersen House, where Leale and the others laid Lincoln diagonally on the small bed, rented by William Clark. After clearing everyone out, they searched for other wounds by removing all of Lincoln's clothes. When they realized that Lincoln's body was cold, they applied hot water bottles,
mustard plasters, and blankets. At this point other physicians took charge of Lincoln's care, but Leale kept hold of Lincoln's hand throughout the night, "to let him know that he was in touch with humanity and had a friend." Lincoln remained comatose until he died at 7:22 the next morning, April 15, 1865. For his efforts, Leale was allowed to participate in various capacities during Lincoln's funeral. ==Later life==