by Pennsylvania State University

1915

by Pennsylvania State College, Pennsylvania State University

1920

by State Horticultural Association of Pennsylvania

1929

by Pennsylvania. Department of Agriculture

1913

by Pennsylvania State University. Agricultural Experiment Station

1914

by Pennsylvania. Office of the Auditor General

1923

by Pennsylvania State University. Agricultural Experiment Station

1908

by Pennsylvania

1916

by Agricultural College of Pennsylvania. Board of Trustees

1908

by Pennsylvania. General Assembly

1929

by Pennsylvania State College

1923

by Pennsylvania State Horticultural Association

1928