The phsyical order of this collection is based on its original order at the time of accession. Intellectually, the collection is arranged into 7 series and 22 subseries. The series and subseries are arranged alphabetically with the exception of the Plant Science subseries. The arrangement of this subseries is based on the numerical order of the folders and boxes in which the materials reside.

Series 1. 4-H Subseries 1. Activities and Administrative Files Subseries 2. Leadership Series 2. Administrative Records Subseries 1. Departments and Organizations Subseries 2. Reports, Correspondence, Administrative Records Series 3. Audiovisual Material

Subseries 1. Audiotapes Subseries 2. Born-Digital Material Subseries 3. CD-Rs Subseries 4. Photographic Slides

Series 4. Master Gardener Program

Series 5. Phoebe Gordon Records

Series 6. Subject File Subseries 1. Alfalfa Subseries 2. Animals, Birds, Fish Subseries 3. Cotton Subseries 4. Farm Management Subseries 5. Farm Safety and Regulations Subseries 6. Insects and Pests Subseries 7. Livestock Management Subseries 8. Miscellaneous Crops and Subjects Subseries 9. Plant Science Subseries 10. Soil Subseries 11. Weather, Climate, and Pollution Subseries 12. Viticulture Subseries 13. Weeds Series 7. San Joaquin Experimental Range Subseries 1. Photographic Material