A complete book of magickal symbols and sigils, by two of the most prominent and influential occultists of all time. The "Lesser Key" contains the magickal sigils (symbols) of the 72 "Goetia", spirits, which can be called upon by the adept to perform actions on the astral plane. An essential work book for anyone interested in this form of ceremonial magick! 

Aleister Crowley (/ˈkroʊli/; born Edward Alexander Crowley; 12 October 1875 - 1 December 1947) was an English occultist, ceremonial magician, poet, painter, novelist, and mountaineer. He founded the religion and philosophy of Thelema, identifying himself as the prophet entrusted with guiding humanity into the Æon of Horus in the early 20th century.

Samuel Liddell (or Liddel) MacGregor Mathers (8 or 11 January 1854 - 5 or 20 November 1918), born Samuel Liddell Mathers, was a British occultist. He is primarily known as one of the founders of the Hermetic Order of the Golden Dawn, a ceremonial magic order of which offshoots still exist today.