A Week on the Concord and Merrimack Rivers

A Week on the Concord and Merrimack Rivers (1849) is a book by Henry David Thoreau (1817-1862). It is ostensibly the narrative of a boat trip from Concord, Massachusetts to Concord, New Hampshire, and back, that Thoreau took with his brother John in 1839. John died of tetanus in 1842 and Thoreau wrote the book, in part, as a tribute to his memory.