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 Seaver Center for Western History Research collects, preserves, and makes available to the general public and to scholars historic records pertaining to the history and the exploration of the trans-Mississippi American West, with particular emphasis on Southern California and Los Angeles. Its historic records holdings include (but are not limited to) manuscript materials, books, serials, trade…