Kevin DannKevin Dann is the author of Expect Great Things: The Life and Search of Henry David Thoreau and a dozen other books of exploration. He received his PhD from Rutgers University in American and Environmental History, and has taught at Rutgers Unversity, the University of Vermont, and the State University of New York. He leads magical bike and walking tours in Manhattan and Brooklyn. Learn more at drdann.com. Read More Read Less