The California Polytechnic State University Special Collections and Archives collection contains audiovisual material (moving images and audio) from the 1930s to the 1970s. The majority of the collection consists of nonfiction films including home movies and amateur filming documenting agricultural life.
The Ontario City Library collection contains audiovisual material (moving images, audio) and still images from the mid 1890s to the mid 1990s. The majority of the collection consists of oral histories and include subjects and topics such as automobiles, John S. Armstrong, the Long Beach Earthquake of 1933, Chaffey College, and more.
The Rancho Santa Ana Botanic Garden collection contains texts and images from the 1920s to the 1990s. A majority of the collection consists of images of the garden property, tours by staff, and booklets documenting native California horticulture.