- (1903-11) correspondence class course in yogi philosophy and oriental occultism: the first lesson
- (1903-12) correspondence class course in yogi philosophy and oriental occultism: the second lesson
- (1904-01) correspondence class course in yogi philosophy and oriental occultism: the third lesson
- (1904-02) correspondence class course in yogi philosophy and oriental occultism: the fourth lesson
- (1904-02) correspondence class course in yogi philosophy and oriental occultism: the first four lessons
- (1904-03) correspondence class course in yogi philosophy and oriental occultism: the fifth lesson
- (1904-04) correspondence class course in yogi philosophy and oriental occultism: the sixth lesson
- (1904-05) correspondence class course in yogi philosophy and oriental occultism: the seventh lesson
- (1904-06) correspondence class course in yogi philosophy and oriental occultism: the eighth lesson
- (1904-07) correspondence class course in yogi philosophy and oriental occultism: the ninth lesson
- (1904-09) correspondence class course in yogi philosophy and oriental occultism: the last five lessons
- (1904-10) advanced course in yogi philosophy and oriental occultism: lesson i