Noel Tyl was one of the foremost astrologers in the world. His twenty textbooks have guided astrologers for two generations, and his lecture activities reached out through sixteen countries and some 200,000 miles a year.

Tyl wrote the definitive professional manual in the astrology counseling field, the 1,000-page Synthesis & Counseling In Astrology is consulted regularly by individuals and corporations throughout the world. He also directed the Master's Degree Correspondence Course for Certification of professional astrologers from his office in the Phoenix, Arizona area.

Tyl, a Harvard University graduate, was the Presiding Officer of AFAN ( The Association for Astrological Networking), astrology's world organization.