by Puerto Rico. Office of the Attorney General

1919

by Puerto Rico. Governor

1930

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

1912

by University of Puerto Rico (1903-1966)

1915

by Puerto Rico. Dept. of the Treasury

1915

by Puerto Rico. Office of the Auditor

1910

by Puerto Rico Experiment Station

1936

by Puerto Rico. Dept. of Education

1900

by University of Puerto Rico. College of agriculture and mechanic arts

1918

by Puerto Rico. Department of Education

1917

by Puerto Rico

1905

by Federal Experiment Station in Puerto Rico

1912