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1880-1951
Ellsworth
11
Lincoln
11
1872-1928
8
Amundsen
8
Arctic regions
8
Discovery & exploration
8
Roald
8
Amundsen-Ellsworth Arctic Expedition
5
Explorers
5
Ice
5
1925
4
1926
4
Airplanes
4
Amundson-Ellsworth Arctic Expedition
3
1882-1958. - Flynn
2
1888-1958
2
Airships
2
Australian Inland Misson
2
Douglas
2
Frontier thesis
2
George H. (George Hubert)
2
John
2
Mawson
2
Sir
2
Wilkins
2
1871-1936
1
1893-1978
1
1899-1973
1
Air pilots
1
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