Here are some images from the heyday of phrenology. Most of them come from the book The Illustrated Self-instructor in Phrenology and Physiology: With One Hundred Engravings, and a Chart of the Character, written by Orson Squire Fowler and Lorenzo Niles Fowler, published in 1857. Like bumps on a head, these images almost speak for themselves.
(That’s an except from the article “Where in your head?,” Published in AIR 13:4.)