"Tibetan Zen: Discovering a Lost Tradition" By Sam van Schaik

Published by Shambhala Publications in September 2015, “Tibetan Zen: Discovering a Lost Tradition” by Sam van Schaik translates some of the earliest surviving Tibetan Zen manuscripts preserved in Dunhuang. 
From the Shambhala Publications website:
Until the early twentieth century, hardly any traces of the Tibetan tradition of Chinese Chan Buddhism, or Zen, remained. Then the discovery of a sealed cave in Dunhuang, full of manuscripts in various languages dating from the first millennium CE, transformed our understanding of early Zen. This book translates some of the earliest surviving Tibetan Zen manuscripts preserved in Dunhuang. The translations illuminate different aspects of the Zen tradition, with brief introductions that not only discuss the roles of ritual, debate, lineage, and meditation in the early Zen tradition but also explain how these texts were embedded in actual practices.
Buy the book on Amazon here: http://amzn.to/1P0NaaF