The Metropolitan Water District of Southern California manages a library and archival repository documenting the activities of the organization and resources of interest to the greater history of the Los Angeles region. 

Collection includes materials related southern California tourism, the Mission Revival movement, peace movement (1st half 20th century, citrus industry, and materials related to specific collections,including fine art, statuary, bells, crosses, dolls, aviation, Native American basketry, and Asian arts.

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.

The Baseball Reliquary maintains a large collection of artifacts, artworks, photographs, and documents related to baseball history in Southern California and the United States.

The Drucker Institute, in cooperation with the Honnold/Mudd Library at the Claremont Colleges, maintains a collection of records donated by Peter Drucker and others with whom he interacted. The archives’ purpose is to support research related to Drucker’s life and work. The collection includes articles written by or about Peter Drucker, images and magnetic media, boxed awards and ephemera, and…

The collection is currently being evaluated to determine content and needs for curation and as such is not yet available to the public.

The Topanga Historical Society (THS) was organized in 1974 by a group of dedicated community leaders who recognized the urgent need to collect and preserve records of Topanga’s unique history and to make them available to future generations. The Society maintains an Archive Center and presents quarterly local history programs.