"The Key of Solomon, Clavis Salomonis, is a medieval book on magic originally attributed to King Solomon. It is sometimes used as a grimoire. It is possible that the Key of Solomon inspired later works such as the Clavicula Salomonis ("The Lesser Key of Solomon") also called Lemegeton, although there are many differences between the books. What may have inspired the Lemegeton are the conjurations and rituals of purification, and in a less important way, the clothing and magic symbols. Several versions of the Key of Solomon exist, in various translations, and with minor or significant differences. Most manuscripts date to the 16th or 17th century, but a prototype in Greek still survives from the 15th century." (Quote from wikipedia.org)