California Map 1850
County History California State Association of Counties Admission of the State of California into the Union County History California State Association of Counties Sept. 9, 1850, California becomes the 31st U.S. state County History California State Association of Counties
Map of Oregon and Upper California from the Surveys of John Old Historical City, County and State Maps of California County History California State Association of Counties CA Historical County Lines
Map of Oregon and Upper California from the Surveys of John Old Historical City, County and State Maps of California County History California State Association of Counties CA Historical County Lines
