Bhutan, No 78 I, Tongsa

1935

Survey of India

Bhutan & Tibet, No 78 E, Punakha

1934

Survey of India

Assam, Bhutan & Tibet, No 78M. Towang

1920

Survey of India

Map of the Eastern Himalayan Mission Field of the Church of Scotland

1905

Christison, George W. 1837-1924

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India and adjacent countries

1931

Survey of India offices

1:1m

World Aeronautical Chart. Brahmaputra River (554).

1954

Aeronautical Chart Service, U.S. Army Air Forces

1:1m

Assam et Boutan. Asie 84.

1827

Vandermaelen, Philippe, 1795-1869

1:2m

India 8.

1883

Letts, Son & Co.

1:2m

KARTE von ASSAM

1834

Berghaus, Heinrich Karl Wilhelm

1:1m

Panoramic Profile of the Hill Ranges of Sikkim in Two Parts Point of Sight Observatory Hill South Darjeeling

1882

Survey of India Offices