Michael Benjamin Berger, Henry David Thoreau (2000). “Thoreau's Late Career and The Dispersion of Seeds: The Saunterer's Synoptic Vision”, p.126, Camden House
Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.221, Graphic Arts Books
Henry David Thoreau (2017). “Journeys, Adventures & Life in Harmony with Nature – 6 Book Collection (Illustrated): Including Walden, A Week on the Concord and Merrimack Rivers, The Maine Woods, Cape Cod, A Yankee in Canada & Canoeing in the Wilderness - North American Highlands Series”, p.47, e-artnow