by Ohio State University. Engineering Experiment Station

1928

by Ohio Agricultural Research and Development Center

1912

by Ohio

1921

by Ohio

1885

by Ohio State University. Engineering Experiment Station

1923

by Ohio. Attorney General's Office

1924

by Ohio State University. Engineering Experiment Station

1919

by Ohio State University

1927

by Ohio State University

1922

by Ohio State University. Alumni Association

1929

by Ohio State University, Columbus. Engineering Experiment Station

1919

by Ohio State University. Engineering Experiment Station

1911