Flight code : "Symbol: ABI USDA CSS-3-57 DC." Flown by Cartwright Aerial Surveys, Sacramento, Calif. Eastern boundary of coverage is a line roughtly from Auberry to south of Dunlap. On the west, coverage is lacking or area west of present-day Highway 5, except for Coalinga and the boundary with Monterey County. Flight completed 10-24-57. Photomosaic index (25 sheets) copied 11-16-57.