A nice hardcover edition of this work which is increasingly hard to find in a complete, matching three volume set. This is a gently used set- no underlining.  The author, Gottfried de Purucker (1874– 1942) succeeded Katherine Tingley as head of the Theosophical Society, Pasadena (then headquartered at Point Loma, California) from 1929-1942. This three volume set comprises a large collection of conversations between teacher and students on Theosophical occultism. The volumes are undated, save for the copyright year (1948) on the reverse of each title-page