by Iowa. General Assembly. Senate

1923

by Iowa. General Assembly

1927

by Iowa

1997

by Iowa State University

1917

by Iowa. State Board of Regents

1916

by Iowa. Executive council

1916

by Iowa Engineering Experiment Station

1911

by Iowa State College of Agriclture and Mechanic Arts (Ames). Agricultural Extension Dept

1918

by University of Iowa. Board of Regents

1908

by Iowa

1925

by Iowa. Auditor of State

1917

by Iowa State College. Engineering Extension Service

1918