Bhutan and Tibet. Survey of India, Sheets 77 H,K,L,O,P. Photocopy of original revision survey by Captain H.R.C. Meade in Aug/Sep 1922. 4 miles = 1 inch.
North-East Frontier. Sketch Map to Show Routes Leading from Sikkim to Lhasa, reduced from map by Captain W.F. O'Connor, R.A., Gangtok, 3 Feb 1903. Intelligence Branch Topo. Dy. No. 4704, 1903. 16 miles = 1 inch.
Tibet. Plan showing the pieces of lands proposed to be taken for the Agency building site and Indian traders mart. Gyantse. MS, signed Lobzang Chhoden, Surveyor, Sikkim Agency. Undated. 1 mile = 16 inches.
Map showing Mr Hosie's Route to the Thibetan Frontier and back to Chengtu. [Sir Alexander Hosie (1853-1925), Chinese consular service 1876-1912.] (2000 8/05. 1224.) F.0.467. Two copies, one annotated. 26 miles = 1 inch.