County research:
California
Statehood: 9 Sept 1850
31st state of the United States
Bordering states:
North: Oregon
East: Nevada, Arizona
Capital: Sacramento
Largest city: Los Angeles
Map: California, 1893
(click map to enlarge)
Library of Congress, Geography and Map Division
Counties: Original 1850 California counties at the time of statehood: Butte, Calaveras, Colusa, Contra Costa, El Dorado, Los Angeles, Marin, Mariposa, Mendocino, Monterey, Napa, Sacramento, San Diego, San Francisco, San Joaquin, San Luis Obispo, Santa Barbara, Santa Clara, Santa Cruz, Solano, Sonoma, Sutter, Trinity, Tuolumne, Yolo, and Yuba. California County Creation Dates and Parent Counties. Counties in 2020: 58
Manuscripts
California Manuscripts, Archive Grid
California Manuscripts, Library of Congress
Maps
California Maps, Library of Congress
California Landowner Maps, Library of Congress
Interactive Map of California County Formation History, Maps of U.S.
Historical Maps Works: California
Official map of the County of Tehama, California, 1878
Institutions, Societies, and Government Websites
California Digital Archives, California State Archives
California State ArchivesCollections & Catalogs
California State Library Online Collections
Calisphere, University of California
University of California, Berkeley Digital Collections
University of California, Davis Digital Collections
Butte County
Keith Lingenfelter Collection Guide, California State University, Chico Special Collections
Additional websites
Record Sets-State Level
California Record Sets (Ancestry Collections)
California Record Sets (Family Search)
Vital Records
California Birth Index, 1905-1995, (Ancestry)
California, Marriage Index, 1949-1959, (Ancestry)
California, Marriage Index, 1960-1985, (Ancestry)
California, U.S., Death Index, 1905-1939 (Ancestry)
California, Death Index, 1940-1997, (Ancestry)
Virtual Libraries
State of California
A Memorial and Biographical History of Northern California, Illustrated, 1891.
Yuba, Sutter, Colusa, Butte and Tehama, California, Counties Directory, 1884
Tehama County
Tehama County in Northern California, W. C. Spann, 1903.
Newspapers
Newspapers Archive: California
Chronicling America: California
Community History Archive Newspapers: California
Small Town Newspapers
(Select California)
California Digital Newspaper Collection, UCR Center for Bibliographical Studies and Research