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John Muir
30
naturalist
30
correspondence
24
letters
24
travel
18
Environmentalist
14
conservation
14
history
14
national parks
14
writing
14
California
12
author
12
correspondent
12
epistle
12
exchange of letters
12
mail
12
message
12
missive
12
notes
12
post
12
drawings
4
journaling
4
journals
4
writings
4
annotation
2
journal articles
2
pamphlets
2
speeches
2
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