Sledge: The British Trans-Greenland Expedition 1934.

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An account of the traversal of the Greenland Ice-Cap, between Jakobshaven, near Disco Island on the west coast, and Angmagssalik on the east coast.

Those Greenland Days: The British Arctic Air-Route Expedition, 1930-31.

 Preview 

A rather less engaging book than his later Sledge, but informative on an expedition to scope out air-routes across Greenland by meteorological observations on the icecap. Several reading references: