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Survey of India

Taylor's Maps of the following Tea Districts

1910

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1933

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Bhutan & Tibet, No 78 E, Punakha

1934

Survey of India

Bengal, Bhutan, Nepal, Sikkim & Tibet, No 78 J, Darjeeling

1937

Survey of India

India and adjacent countries

1931

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1:1m

The Nothern Provincies of Bengal; with the Bootan, Morung, & Assam Frontiers

1781

Rennell, James

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1952

Aeronautical Chart Service, U.S. Army Air Forces

1:1m

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1883

Letts, Son & Co.

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1827

Vandermaelen, Philippe, 1795-1869

1:2m