Topic
Northwest Passage
547
Arctic
133
Nord-Ouest
111
Passage du
107
Natural history
97
John
96
History
94
Canada
83
Arctic regions
80
Franklin
56
Arctic Ocean
53
Sir
50
oceanography
48
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
47
DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
47
Discovery and exploration
47
General Earth and Planetary Sciences
46
Ecology
43
Geography, Planning and Development
43
Description and travel
42
Northwest
42
1786-1847
40
Pacific
39
WATER TEMPERATURE
39
geo
39
North Atlantic Ocean
38
Artists--Washington (State)--Seattle
37
Watercolor painting--Northwest
37
Canadian
36
Inuit
36
Northeast Passage
36
SALINITY
36
Beaufort Sea
35
Davis Strait
34
Hudson Bay
34
Voyages around the world
33
Baffin Bay
32
Explorers
32
North Pacific Ocean
32
Canadian Arctic
31
Expeditions
31
Indians of North America
31
physical
31
Bering Sea
30
Salinity
30
Labrador Sea
29
Law
29
South Atlantic Ocean
29
United States
29
profile
29
more ...