This series contains materials related to the sale and marketing of citrus fruits. Sunkist and other brands released materials touting both the taste and health benefits of citrus fruit and juice. Items include advertisements, magazines, posters, booklets, advertising guides for vendors, store signage, crate labels, newspaper clippings, cookbooks, and postcards.

This sub-series contains materials related to the National Orange Show in San Bernardino and the Valencia Orange Show. Materials include artifacts such as commemorative pins, pennants, and souvenirs, brochures, programs, newspaper clippings, and photographs. Items of note include a record on rare orange vinyl, which contains a recording of "California Orange Blossom" created for the 1949 National Orange Show.