The professional preparation of high-school teachers
National Society for the Study of Education; Miller, Harry Lloyd; Whipple, Guy Montrose, 1876-1941; Gosling, Thomas Warrington, 1872-1940; Colvin, Stephen S. (Stephen Sheldon), 1869-1923; Koos, Leonard Vincent, 1881-; Mead, Arthur Raymond, b. 1880