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history
Environmentalist
10
John Muir
10
conservation
10
national parks
10
naturalist
10
travel
10
correspondence
8
letters
8
Alaska
2
Eskimo
2
annotation
2
archaeology
2
cryptozoology
2
journal articles
2
muskoxen
2
pamphlets
2
speeches
2
writing
2
Animal culture
1
Pleistocene
1
SF1-1100
1
extinction
1
hunting
1
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