The Chico Grange was established in 1932 to give support and create opportunities for the rural and agricultural communities of Butte County. The collection consists of organizational records for Chico Grange 1932-1993, including minutes, reports, membership, correspondence, financial, journals, handbooks and scrapbooks.

The Morehead Family Letter Collection (1866-1966) consists of three boxes of corrospondances to and from the Chico, California's Morehead family. The collection includes miscellaneous letters; letters from two incarcerated Japanese-American families in Tule Lake; divorce paperwork; letters from Europe during World War I; and family vacation photographs.