The web address of the Orange County Historical Society is: www.orangecountyhistory.org
The web address of the Mono County Historical Society is: www.monocomuseum.org
The web address of the Monterey County Historical Society is: www.mchsmusuem.org
The web address of the Amador County Historical Society is: amadorcountyhistoricalsociety.org
The web address of the Placer County Historical Society is: placercountyhistoricalsociety.org
The web address of the Lake County Historical Society is: lakecountyhistory.org
The web address of the Napa County Historical Society is: http://www.napahistory.org
The web address of the Sierra County Historical Society is: http://kentuckymine.org
The web address of the San Joaquin County Historical Society is: www.sanjoaquinhistory.org
The web address of the San Benito County Historical Society is: sbchistoricalsociety.org
The web address of the Contra Costa County Historical Society is: www.cocohistory.com
The web address of the Historical Society Of Alpine County Museum is: www.alpinecounty.com/museum/
The web address of the Calaveras County Historical Society is: http://www.calaverascohistorical.com/museu