For everyone who wishes to judge people by their appearance, here is How to Analyze People on Sight, by Elsie Lincoln Benedict and Ralph Paine Benedict.
The Benedicts divide humanity into five types, all of which are full of the most deliciously blatant stereotypes you have ever seen. Fat people enjoy life! “Cerebral” types have large heads! Muscular people like to work, but don’t like to think too hard. Also, they have square jaws. People with a large lung capacity should marry other people with large lungs.