The Downey Historical Society is located at the Downey History Center in Apollo Park. For more than thirty years, the society's all-volunteer staff has been gathering and preserving records and artifacts from and about the southeastern part of Los Angeles County. The society's collection includes original photographs from 1870 to the present (copy negatives, duplicate prints, or 35-mm slides are…

The collection of the Duarte Historical Society and Friends of the Library focuses on the history of the City of Duarte and adjacent Bradbury. Its archive includes photographs, records, and other artifacts related to the settlers and families who developed Duarte, the local schools, and the local citrus industry..

The Historical Society of Long Beach (HSLB) was formed in 1962 with the mission to collect, preserve, and present the city’s history. Throughout the years the HSLB has occupied many locations around the city, settling at its current location in Bixby Knolls in 2007. Operations are sustained at the HSLB by grant funding, membership dues, and community fundraising through programs and events.

This collection is limited to material from, and relative to, the history of the Los Angeles Police Department. The collection consists of retired and replica police vehicles, a retired helicopter and police motorcycles. Uniforms, equipment and artifacts dating to the beginning of the LAPD are also held within the collection. The non-public archive houses annual reports, photos and motion picture…

The Mojave Desert Archives preserves the history of transcontinental travel to the Los Angeles region through the Mojave Desert of eastern California. Route 66, National Old Trails Road, the Mojave Wagon Road, the Santa Fe Railway (now BNSF), Union Pacific Railroad, and Interstate highways were and are major transit routes through the desert terminating in the Los Angeles basin.

To share and make known the organization's significant archive and collections of San Fernando Valley history. SFVHS serves as caretaker of the Andres Pico Adobe historic site in Mission Hills as well as the Pioneer Cemetery in Sylmar.

The Sierra Madre Historical Archives collects, preserves, and provides access to a variety of materials that tell the Sierra Madre story: photographs, slides, postcards, scrapbooks, city directories, maps, letters, periodicals, posters, works of art, sound recordings, moving images, and ephemera. The archives collection includes the Sierra Madre Oral History Project in which residents describe…