This image depicts the path of the iron rod through Gage's skull. The illustration was included in Dr. Harlow's account of the accident and subsequent impact on Gage, which was first published in 1868 in the Bulletin of the Massachusetts Medical Society.
"The missile entered by its pointed end, the left side of the face, immediately anterior to the angle of the lower jaw, and passing obliquely upwards, and obliquely backwards, emerged in the median line, at the back part of the frontal bone near the coronal suture," Harlow wrote.
