Gnani Yoga by Yogi Ramacharaka (Hardcover)
What stands out is the illustrated case cover under the dust jacket.
GNANI YOGA – YOGI RAMACHARAKA Yogi Pubs Hardcover Ed, Yoga of Wisdom NEW THOUGHT
The Yoga of Wisdom: A Series of Lessons in Gnani Yoga Hardcover by Yogi Ramacharaka. Yogi Publications; reprint of 1907 original. It can be defined as the "awareness of absolute consciousness," and is a comprehensive practice of self-study (Svadhyaya).