The Downey Historical Society is located at the Downey History Center in Apollo Park. For more than thirty years, the society's all-volunteer staff has been gathering and preserving records and artifacts from and about the southeastern part of Los Angeles County. The society's collection includes original photographs from 1870 to the present (copy negatives, duplicate prints, or 35-mm slides are…

The Hayden Memorial Library at Citrus College archive collection contains photographs, yearbooks (1899-1965), scrapbooks, newspaper clippings, school newspapers, books, ephemera and information that document the history of Citrus College, and depicting people, buildings and events of the City of Azusa and the surrounding San Gabriel Valley. The collection covers the years 1890s to the present.…

The Library has a large collection of manuscripts, printed books and periodicals, photographs, maps and ephemera relating to Los Angeles.