The William Andrews Clark Memorial Library is a rare books and manuscripts collection, with particular strengths in English literature and history (1641–1800), Oscar Wilde, and fine printing. Though the majority of the Clark's collections are focused on Great Britain, the library still maintains significant Los Angeles-related collections.

The Digital Library of the University of Southern California (formerly known as the Digital Archive, formerly known as ISLA) is an ongoing project that is building a virtual library of digitized multidisciplinary materials much of which has a focus on the Los Angeles region. Its search and retrieval software will allows these materials to be accessed using the parameters of space, time, keyword,…

The Whittier History Room is located on the mezzanine of the Central Library and is home to the Whittier Local History Collection. The purpose of this collection is to collect, preserve and make available to the public materials reflecting the development of the City of Whittier and surrounding areas. The main areas of collection are Whittier history, Whittier Hills and California history. The…

The Yosemite Archives contain historical records and manuscripts related to Yosemite's history, including the donated papers of ethnographers and scientists, resource management records, historic park administrative records, and slide, photo, and film collections.