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.

As the only collecting institution focused solely on the art, craft, and history of Hollywood writers and their labor union, the Writers Guild Foundation Library & Archive are vividlly relevant to the creative and business communities of Los Angeles. The holdings document a rich facet of Los Angeles culture in relation to the role of writers in the entertainment industry.