Vaught’s Practical Character Reader was a textbook on phrenology by L. A. Vaught, published in 1902. In it, diagrams of human heads are presented showing the difference between desirable characters and undesirables according to the shape of the head. Various regions of the brain are assigned to different traits, so you can learn to judge people on your own. From the preface:
The purpose of this book is to acquaint all with the elements of human nature and enable them to read these elements in all men, women and children in all countries. At least fifty thousand careful examinations have been made to prove the truthfulness of the nature and location of these elements. More than a million observations have been made to confirm the examinations. Therefore, it is given the world to be depended upon. Taken in its entirety it is absolutely reliable. Its facts can be completely demonstrated by all who will take the unprejudiced pains to do so. It is ready for use. It is practical. Use it.