Sir Francis Younghusband (seated, center) wears a thick fur coat against the cold winds of the Tibetan plateau at Phari Dzong, Tibet, January 1904. His mission to Lhasa, a major military expedition during which many Tibetans were killed, led to the signing of the Treaty of Lhasa with His Holiness the 13th Dalai Lama.

This prayer wheel, sketched by Sarat Chandra Das in 1879, was formerly in the possession of the mother of the late Tashi Lama. The prayer wheel is silver and is studded with corals and turquoise. Prayer wheels helped to disguise pundits as pilgrims, but were also used by them to record measurements and hide survey notes.