Amador County, California
Kennedy Mine Historic District (District)
[Map] 12594 Kennedy Mine Rd., Jackson, CaliforniaAlso known as: Kennedy Mining and Milling Company, Kennedy Mining Company, Humbug Hill, Kennedy Quartz Mining Claim, The Gate
Preston Castle (Correctional facility)
[Map] N of Ione on Preston Ave., Ione, CaliforniaAlso known as: Preston School of Industry