The Human Aura: Astral Colors and Thought Forms: Esoteric Classics (Unabridged‪)‬

This work on the human aura, now a classic, was originally published under one of William Walker Atkinson's many pseudonyms in 1912. In it he covers the full spectrum of knowledge on the subject, starting from the basics of simply what an aura is to analysis and symbolic meanings of the various colors to more advanced concepts, such as how to manipulate your own aura for protection.