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John Muir
4
naturalist
4
writing
California
2
Environmentalist
2
annotation
2
author
2
conservation
2
correspondence
2
correspondent
2
epistle
2
exchange of letters
2
history
2
journal articles
2
letters
2
mail
2
message
2
missive
2
national parks
2
notes
2
pamphlets
2
post
2
speeches
2
travel
2
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