The Goetia: The Lesser Key of Solomon the King (or Lemegeton) is a 17th-century grimoire, heavily influenced by 16th-century texts, that catalogs 72 demons purportedly bound by King Solomon. It serves as a textbook for summoning demons—or "spirits"—providing their ranks, sigils, and rituals for commanding them to perform tasks. The work is considered essential to Western occultism, with a well-known version edited by S.L. MacGregor Mathers and Aleister Crowley.