The twenty one courses comprise the study manuals for the Church of Light Correspondence Program. There are 23 volumes covering three branches of study: Astrology, Alchemy and Magic (Tarot). These books comprise the 20th century contribution to The Brotherhood of Light tradition.
Elbert Benjamine books are an important addition to any complete astrological library. Many of his books are referenced in the 21 Courses (C. C. Zain) and offer further explanation for the concepts discussed in the course work.
For a complete list of Elbert Benjamine books... click here