Wrote more than 60 books, including ''The Diary of a Witch,'' published in 1968, and works on numerology, phrenology and astrology. Among her books were ''Numerology: The Magic of Numbers,'',''The Sybil Leek Book of Fortune Telling,'' ''Phrenology,'' ''Guide to Telepathy'' and ''The Story of Faith Healing,'' all published by Macmillan.