A Week on the Concord and Merrimack Rivers Thoreau, Henry David, 1817-1862 1817-1862 -- Travel -- Massachusetts -- Concord River; Thoreau1817-1862 -- Travel -- Merrimack River (N.H. and Mass.)Concord River (Mass.) -- Description and travel; Merrimack River (N.H. and Mass.) -- Description and travel; ThoreauHenry David
