The American boardinghouse once provided basic domestic shelter and constituted a uniquely modern world view for the first true generation of U.S. city-dwellers. Thomas Butler Gunn's classic 1857 account of urban habitation, The Physiology of New York Boarding-Houses, explores the process by which boardinghouse life was translated into a lively urban vernacular. Intimate in its confessional tone, comprehensive in its detail, disarmingly penetrating despite (or perhaps because of) its self-deprecating wit, Physiology is at once an essential introduction to a "lost" world of boarding, even as...