Analysis of information sources in references of the Wikipedia article "Henry Rathbone" in English language version.
while I was intently observing the proceedings upon the stage, with my back toward the door, I heard the discharge of a pistol behind me, and, looking round, saw through the smoke a man between the door and the President. The distance from the door to where the President sat was about four feet. At the same time I heard the man shout some word, which I thought was 'Freedom!'
I instantly sprang toward him and seized him. He wrested himself from my grasp, and made a violent thrust at my breast with a large knife. I parried the blow by striking it up, and received a wound several inches deep in my left arm .... The man rushed to the front of the box, and I endeavored to seize him again, but only caught his clothes as he was leaping over the railing of the box. The clothes, as I believe, were torn in the attempt to hold him. As he went over upon the stage, I cried out, 'Stop that man.'
I then turned to the President; his position was not changed; his head was slightly bent forward and his eyes were closed. I saw that he was unconscious, and, supposing him mortally wounded, rushed to the door for the purpose of calling medical aid.
Maj. Joseph B. Stewart, a lawyer, who was 6 feet 6 inches tall and probably the tallest man in Washington, was sitting in the front seat of the orchestra, on the right-hand side. Startled by the shot, he looked up and saw Booth tumbling onto the stage. Rising instantly. Stewart climbed over the orchestra pit and footlights, and pursued Booth across the stage, shouting several times "Stop that man!" He stepped out the back door only to see Booth mount his horse and ride away.