by University of the State of New York

1911

by University of the State of New York

1922

by Cornell University

1930

by University of the State of New York

1930

by University of the State of New York

1922

by University of Texas. Division of Extension

1925

by Clark University (Worcester, Mass.)

1927

by Clark University (Worcester, Mass.)

1921

by University of North Carolina at Chapel Hill

1926

by University of North Carolina (System)

1923

by Benjamin William Frazier, John Lund, Kent State University, Mary Dabney Davis, Mary Evalyn Crookston, Max Lederer, Nora Ernestine Beust, United States. Office of Education

1941

by University of the State of New York

1910