David Stradling is assistant professor of history at the University of Cincinnati. He is the author of Smokestacks and Progressives: Environmentalists, Engineers, and Air Quality in America, 1881-1951.

David Stradling is assistant professor of history at the University of Cincinnati. He is the author of Smokestacks and Progressives: Environmentalists, Engineers, and Air Quality in America, 1881-1951.