This Library of America edition collects for the first time in one volume the four full-length works in which Henry David Thoreau combined his poetic sensibility, classical learning, philosophical austerity, and Yankee love of practical detail into literary masterpieces on humanity's communion with nature. A Week on the Concord and Merrimack Rivers is based on a boat trip Thoreau took with his brother in 1839 from Concord, Massachusetts,...