A Week on the Concord and Merrimack Rivers by Henry David Thoreau. University of Virginia electronic text.
The Sudbury, Assabet, and Concord River Stewardship Council
Thoreau Land and Property Surveys - The Concord Free Public Library
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| A Botanical Index to the journals of Henry David Thoreau by Ray Angelo. Sponsored by the Harvard University Herbaria. A Week on the Concord and Merrimack Rivers by Henry David Thoreau. University of Virginia electronic text. The Sudbury, Assabet, and Concord River Stewardship Council Thoreau Land and Property Surveys - The Concord Free Public Library |
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