... with my eyes continuously watching the President's face, I asked a gentleman to cut the coat and shirt open from the neck to the elbow to enable me, if possible, to check the hemorrhage that I thought might take place from the subclavian artery or some other blood vessel. This was done with a dirk knife, but no wound was found there. I lifted his eyelids and saw evidence of a brain injury. I quickly passed the separated fingers of both hands through his blood matted hair to examine his head, and ... — Lincoln's Last Hours • Charles A. Leale