Conscious Humans by Bhuvan thaker,
Autobiography of A Yogi by Yogananda,
The Holy Science by Sri Yukteswar Giri,
Abhidhamma from Theravada school of Buddhism,
Be as you are by Raman Maharishi,
Books writen by Swami Shivananda,
Books writen by Harish Johari,
Books written by Swami Chimanayananda
by US_Spiritual