David Gardner No description specified. 1-2 (2 Records) Documents Archaeological Survey Report For a Proposed Left Turn Channelization at Gravenstein Highway and Industrial Avenue-Sparkes Road Near the City of Sebastopol, Sonoma County, 04-Son-116 PM 28.22 04352 - 382461 (Caltrans) (1978) Suscol In Napa County, an Historical Report, 1835-1977 (Caltrans) (1977)