by Puerto Rico

1911

by Puerto Rico. Board of Commissioners of Agriculture

1916

by University of Puerto Rico (Río Piedras Campus). Agricultural Experiment Station

1912

by Puerto Rico. Department of Education

1917

by Puerto Rico. Dept. of the Interior

1927

by Federal Experiment Station in Puerto Rico

1941

by Puerto Rico. Governor

1930

by Puerto Rico. Governor

1919

by Puerto Rico. Office of the Auditor

1903

by Puerto Rico

1911

by Puerto Rico Experiment Station

1936

by University of Puerto Rico (Río Piedras Campus). Agricultural Experiment Station

1903