• 19 Steenbock Library
• 14 Wisconsin Historical Society Library
• 5 Science Libraries Shelving Facility
• 1 Memorial Library

• 42 Journals, Magazines, Newspapers
• 5 Books

• 16 Research
• 6 Alaska Agricultural Experiment Stations (U.S.)
• 4 Experimentation
• 4 United States. Office of Experiment Stations
• 3 Guam Agricultural Experiment Station
• 2 Field experiments
• 2 Instituto Nacional de Investigaciones Agropecuarias (Ecuador)
• 1 Agricultural extension work
• 1 Alabama Agricultural Experiment Station
• 1 Association of American Agricultural Colleges and Experiment Stations. Committee on Methods of Teaching Agriculture
• 1 Crops
• 1 Hawaii Agricultural Experiment Station
• 1 Kansas Agricultural Experiment Station
• 1 Nōshōmushō Nōji Shikenjō (Japan)
• 1 Porto Rico Agricultural Experiment Station
• 1 Soils
• 1 Study and teaching

• 20 United States. Office of Experiment Stations
• 6 Alaska Agricultural Experiment Stations (U.S.)
• 4 Guam Agricultural Experiment Station
• 4 Pennington, Catherine E. (Catherine Emma)
• 4 United States. Department of Agriculture
• 3 Instituto Nacional de Investigaciones Agropecuarias (Ecuador)
• 3 Porto Rico Agricultural Experiment Station
• 2 Hawaii Agricultural Experiment Station
• 2 Oregon State University. Agricultural Experiment Station
• 2 United States. Agricultural Research Service
• 1 Alabama Agricultural Experiment Station
• 1 Association of American Agricultural Colleges and Experiment Stations. Annual Convention
• 1 Association of American Agricultural Colleges and Experiment Stations. Committee on Methods of Teaching Agriculture
• 1 Estación Experimental Quilamapu (Chillán, Chile)
• 1 France. Ministère de l'agriculture
• 1 Indian Council of Agricultural Research
• 1 Institut des recherches agronomiques
• 1 Institut des recherches agronomiques. Association des anciens élèves
• 1 Instituto de Investigaciones Agropecuarias
• 1 Kansas Agricultural Experiment Station
• 1 Maine Agricultural Experiment Station
• 1 Nōshōmushō Nōji Shikenjō (Japan)
• 1 Oregon State University. Malheur Agricultural Experiment Station
• 1 Oregon State University. Malheur Experiment Station
• 1 Puerto Rico Agricultural Experiment Station

• 41 English
• 4 Spanish
• 1 French
• 1 Japanese

• 15 United States
• 6 Alaska
• 6 Puerto Rico
• 4 Guam
• 3 Ecuador
• 2 Hawaii
• 2 Malheur County
• 2 Oregon
• 1 Alabama
• 1 Chile
• 1 France
• 1 Georgia
• 1 India
• 1 Japan
• 1 Kansas
• 1 Maine
• 1 Tokyo
• 1 États-Unis

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