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.

The Gilb Museum of Arcadia Heritage was opened in 2001 and is named after its lead donors, Ruth and Charles Gilb. The Museum is maintained and operated by the City of Arcadia and houses artifacts and artwork representative of local Arcadia history and culture. The Museum presents seven individual interpretive exhibit spaces with both permanent and temporary exhibits as well as three off-site…