Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.233, Graphic Arts Books
"'My discoveries weren't any more extensive or alarming than most people's. I just chose to look'". Interview with Antonia Crane, logger.believermag.com. November 5, 2013.