The Serpent Myth by William Wynn Westcott and Arthur Edward Waite, edited by Darcy Kuntz, Vol 9 of the Golden Dawn Studies Series, the 2006 third revised and enhanced edition published by J D Holmes, is part of the collection at the Reading Room.

“An excellent treatise on this ancient symbol from the inner knowledge of the Golden Dawn system. First edition published in 1996. Revised with A. E. Waite’s paper on the Serpent Myth in 2001.” [via]