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John Muir
22
naturalist
22
writing
California
16
author
16
correspondence
16
correspondent
16
epistle
16
exchange of letters
16
letters
16
mail
16
message
16
missive
16
notes
16
post
16
Environmentalist
6
annotation
6
conservation
6
history
6
journal articles
6
national parks
6
pamphlets
6
speeches
6
travel
6
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