Taylor's Maps of the following Tea Districts

1910

Calcutta : Thacker, Spink & Co.

Bengal & Bhutan, No 78 B/NE

1932

Survey of India

Bengal, Bhutan, Nepal, Sikkim & Tibet

1933

Survey of India offices

1:253k

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

1905

Christison, George W. 1837-1924

1:231k

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

1882

Survey of India Offices

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

1937

Survey of India

Darjiling. Northern section. Southern section. Plate 53

1893

Bartholomew, J. G. (John George), 1860-1920

1:21k

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

1781

Rennell, James

India and adjacent countries

1931

Survey of India offices

1:1m

World Aeronautical Chart. Mount Everest (553).

1952

Aeronautical Chart Service, U.S. Army Air Forces

1:1m