Karmapa 900 is a free e-book published by the Karma Triyana Dharmachakra at the request of His Holiness the 17th Karmapa. The book covers the 900-year history of the Kargyu school of Vajrayana Buddhism in Tibet, and the lineage of the Karmapas. This is the third (revised) edition. The book is exquisitely designed, lavishly illustrated, and extensive in its detail. In short, it is an essential text for any serious practitioner or scholar of Vajrayana Buddhism. Here is the link: http://www.ktdpublications.com/wp-content/uploads/2017/04/KARMAPA900_3rdEdition_e.pdf
