The institution has Special Collections including: 1) Local history; 2) American religious history; and 3) history of the American west. Under Local History, the Azusa-Foothill Citrus Collection consists of manuscripts, legal and business papers, financial journals and ledgers, photographs and maps dating back to 1844. The Sayre MacNeil Collection contains family papers and correspondences, and…

The Institute for Baseball Studies is the first humanities-based research center of its kind associated with a college or university in the United States. The Institute is a collaborative effort of Whittier College administrators and faculty members, and the Baseball Reliquary.

Collections include photographs and newspaper clippings of Irwindale. Materials are uncatalogued and unsorted at the moment, and difficult to use. Access is only available if a staff member can be spared and an appointment is made with the City Librarian. Additionally, the collection contains materials that predate the incorporation of Irwindale in 1957, particularly information related to the…

Collections include pamphlets and ephemera documenting the growth, industries, transportation, and social organizations of Los Angeles and greater southern California; photograph collections; thousands of books related to southern California; and numerous archival collections related to indiviuals, the citrus industry, and businesses in the Inland Empire.