Graham Sandberg
Hand-Book of Colloquial Tibetan
Exploration of Tibet
Itinerary of the Route from Sikkim to Lhasa
Itinerary of the Route from Sikkim to Lhasa, Together with a Plan of the Capital of Tibet and a New Map of the Route from Yamdok Lake to Lhasa
Manual of the Sikkim-Bhutia Language, or, dé-Jong Ké
Tibet and the Tibetans
Tibetan-English Dictionary with Sanskrit Synonyms; Volume 1