The Los Angeles Area Chamber of Commerce materials document the activities of the organization from 1888 through the 1960s. Included in the collection are minutes from the Board of Director’s meetings, reports and publications from various government agencies and business, manufacturing and trade associations; a 35-year run of the Southern California Business Journal; exhibit and promotional graphics; and photographic materials, including prints, negatives, and slides.

Mabel C. Harris, also professionally known as Virginia O'Neal and Martha Logan, was a trained home economist who, after working for Swift and Company and Kerr Glass Manufacturing Corp., was hired by Vons grocery stores in 1960 to be the first home economist hired by a supermarket chain. Her papers consist of photographs, scrapbooks, correspondence, clippings, ephemera, and cookbooks relating to her career in the Los Angeles food and grocery industry from the 1940s to the 1970s.

The Haynes Foundation reports consists of 5 reports funded, and published, by the Haynes Foundation that describe and examine social and economic conditions in Los Angeles between 1948 and 1950. The reports were originally held by the Research Department of the Welfare Council of Metropolitan Los Angeles.