Gampopa - the Monk and the Yogi · His Life and Teachings — by Trungram Gyaltrul Rinpoche
In addition to a bibliography, appendices include a map and a table of place names related to Gampopa and tables summarizing the events in his life.
The Book of Kadam — Attributed to Atisa and Dromtonpa · Library of Tibetan Classic - volume 2
This work is a landmark in the study of Tibetan culture in general and Tibetan Buddhism in particular. Undisputedly one of the greatest works.