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John Muir
3
naturalist
3
writing
3
California
2
author
2
correspondence
2
correspondent
2
epistle
2
exchange of letters
2
letters
2
mail
2
message
2
missive
2
notes
2
post
2
Environmentalist
1
annotation
1
conservation
1
history
1
journal articles
1
national parks
1
pamphlets
1
speeches
1
travel
1
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