The University of California Cooperative Extension Records for the University of California Agriculture and Natural Resources (UCANR) span the years 1943-2003. Records are comprised of two central components: state annual reports and audiovisual materials.

The reports (1943-1966) combine data collected annually from each of the University of California Cooperative Extension (UCCE) county offices. They record the number of instances that extension workers carried out activities that include teaching and trainings, crop trials, consultations, and meetings. The reports also account for marketing and communication activities such as the number of news stories released, publications distributed, direct mailings, and radio and television broadcasts. Home economics activities recorded include food and nutrition education, clothing and textiles, housing, child development, health and physical fitness, and home management. Reports also include statistics about the 4-H Youth Development program. 4-H club work topics include, but are not limited to, electrical work, equipment repair, horticulture, dairy, beef, conservation, and more. Some reports contain supplemental material containing additional statistics as well as correspondence that convey new reporting standards, like the collection of participant data based on race.

The audiovisual material (1953-2003) consists primarily of 16mm film reels. Their assorted subject-matters exemplify UCANR activities such as the 4-H youth development program, food and nutrition trainings, wildland management, agricultural industry, animals, and adolescence and alcohol. The films were produced by UCCE personnel throughout California. VHS tapes and CD-Rs also are also found within the AV material.