by University of Rochester. Division of University Extension

1917

by University of the State of New York

1925

by University of Illinois. High school visitor

1919

by Stanford University

1927

by University of Minnesota

1930

by University of the State of New York. Division of Educational Extension

1901

by Brown University

1895

by University of Minnesota

1925

by University of Chicago

1893

by University of Minnesota

1930

by University of Minnesota

1923

by University of Chicago

1897