"_The Great Work_" _and_ "_The Great Psychological Crime_" were written by the American Representative of that "Venerable School of Wisdom," whose records are the most ancient at this time known to man, and which for many thousands of years, has influenced the civilization and work of every great nation of earth. 464 pages; illustrated. These books are founded upon an exact science. More impressive, more fascinating and "stranger than fiction." "When a man dies, he shall live again," is the inspiring message of the Great Work in America,--and this message is written in clear, concise, simple and easily readable English. Bound in red silk, gold stamped. Price single copy, $2.00. _Per set $6.00, express prepaid._ In Persian Morocco, _de luxe_ edition $3.50 each. _The set at one time, $10.00._ [Illustration] THREE-IN-ONE "As beautiful a volume as the mind can imagine." The HARMONIC SERIES--Three Volumes--Bound in FULL, PERSIAN MOROCCO (Oxford Bible style), round corners, silk head-bands and markers, red-under-gold edges, _Genuine Gold Stamped_. Printed on Japan French paper; several beautiful full-page half-tones. Durable, practical, artistic. Name stamped on cover in pure gold, if desired. Price _de luxe_ edition, all charges prepaid, $12.00. All orders filled the same day they are received. INDO-AMERICAN BOOK CO. 5705 South Boulevard, Chicago, Ill. QUESTIONS ON NATURAL SCIENCE [Illustration] This volume is an aid to the study of the "Harmonic Series." While it commands the attention of the casual reader of the Text Books, it is intended more especially for those who contemplate a closer relationship with the philosophy and for those who _have been admitted to studentship_. To the aspiring student it opens up the entire Harmonic Philosophy in a manner that invites and facilitates the most intense interest, satisfaction and progress. 355 pages, 20 chapters, and 3,857 carefully formulated questions, all of which are _authoratatively_ answered in the Text Books. Three-quarter leather, price $2.00. KEY TO QUESTIONS ON NATURAL SCIENCE. Leather, $1.00. -------------------- THE SPIRIT OF THE WORK [Illustration] _By TK._ These beautiful and inspiring essays by the Beloved Elder Brother are now printed in book form, for ready reference, and will prove to be quite as interesting and helpful to the beginner in Natural Science, as they are useful to instructors and regularly admitted students. They unfold in simple language a wealth of spiritual light that leads at once to a most searching soul--analysis and readjustment of the entire intelligence to the Constructive Principle in Nature. Every page breathes the very inmost meaning and spirit of the educational work of the Great School. If you are in earnest this book will help you. 331 pages, cloth, price $1.00. -------------------- THE QUESTION BOX SERIES [Illustration] _By TK._