Kenneth Haltman is the H. Russell Pitman Professor of Art History at the University of Oklahoma. He is co-editor of American Artifacts: Essays in Material Culture (2000), translator and editor of major works by French phenomenologist Gaston Bachelard, and, most recently, a contributor to Nexus of Exchange: Philadelphia and the Visual Culture of Natural History, 1740 to 1840, edited by Amy R. W. Meyers (forthcoming).