This book is a collection of 4 spiritual biographies written by Swami Satyananda Giri, eminent disciple of Swami Sriyukteshvar Giri.
In this collection are the biographies of revered Yogiraj Shyama Charan Lahiri Mahasaya, as well as biographies of his disciples Yogacharya Shastri Mahasaya (Hansaswami Kebalananda) and Swami Sriyukteshvar Giriji Maharaj, as well as the biography of Paramahansa Yogananda entitled "Yogananda Sanga."
"The Lord's advanced disciples used to keep His life so guarded that any inquiry about Him would bring about a typical response like, 'What would you understand about my Lord; what could you possibly write about that immense Divinity?' Some would become fearful of the idea that a biography might be written about Yogiraj Lahiri Mahasaya - perhaps there could be misinterpretations; maybe the work would represent Him as ordinary and small. They desired to maintain the untainted and clear vision of Sri Guru in the sadhana bestowed upon them by Him." --Swami Satyananda Giri, from his Preface to Yogiraj Shyama Charan Lahiri Mahasay: A Biography.
Swami Satyananda Giri was a supremely illumined Kriya Master and one of the most revered and eminent disciples of Swami Sriyukteshvar Giri. Yoga Niketan was founded by Sri Sailendra Bejoy Dasgupta, an eminent disciple of Swami Sriyukteshvar Giriji Maharaj of Serampore. It was created in order to present, protect and preserve Acharya Dasguptaji's writings and those within his lineage. This mission was entrusted into the hands of his chosen and established spiritual successors who represent him and his line of Gurus. This lineage continues to this day and it is they who publish and carefully protect these books.