This book is a ‘must-read’ for every sincere and dedicated yoga sadhaka as it provides a glimpse of beautiful soulful responses elicited from great masters by the questioning spirit manifesting through a dedicated seeker in Dr. Harry (Hari) Dickman. As an ideal student of a great teacher, Marion McConnell has done commendable seva (selfless service) for the cause of yoga in bringing all of these historical documents together. She lays out in intricate detail some very rare techniques of pranayama, mudra, and dhyana that are gems for all sincere students. Beautiful stories to enliven the spirit embellish the end of this lovely treatise that will serve as a guide for so many spiritual seekers in time to come.