- The Day the Sun Rose Twice: The Story of the Trinity Site Nuclear Explosion, July 16, 1945
- The Protestant Clergy in the Great Plains and Mountain West, 1865-1915
- The Divided Mind of Protestant America, 1880-1930 (Religion and American Culture Series)
- British Scientists and the Manhattan Project: The Los Alamos Years
- Scots in the North American West, 1790-1917