The book provides a comprehensive account of the history of the Sherdukpens, a small and little-known Mahayana Buddhist community of Arunachal Pradesh. The work deals with their political relation with the Ahoms of Assam and the British. The traditional social institutions, political institution and their economic base have been documented and analysed. The Mahayana Buddhism prevalent among them has been studied concerning art, architecture, festivals, and rituals where one can notice the predominance of Tibetan Buddhist elements. The book is a welcome addition to the Buddhist historiography of North-East India.