The Key of the Universe by Harriette Augusta Curtiss and F. Homer Curtiss
Publication: 1922 The Curtiss Philosophic Book Co; San Francisco Fourth and Revised Edition
"Harriette Augusta and F. Homer Curtiss were ardent Theosophists who founded of The Order of Christian Mystics and The Universal Religious Foundation and who wrote a number of texts on Christian mysticism based on the Western Mystery School Tradition. In addition to their books, they offered their teachings through a system of correspondence as well as through frequent public lectures." This particular publication is perhaps their most sought after. Containing the foundational number theory that underpins all subsequent publications.
Condition: Publishers green cloth boards, gilt title to spine and upper board, puncture wound to spine without loss, bookplate to paste down, tightly bound, pages clean, overall in Very Good condition