Marshall, R. B.
California ( Contra Costa country) Brentwood quad surveyed in 1911 in cooperation with state of California , Scale [1:31680] Scale [1:5] Contour Interval 5 feet - Washington US geogological survey 1914 - 1 Map Coloured Map 52 x 42cm
Datum is mean sea level
Topographic Map
912.794
California ( Contra Costa country) Brentwood quad surveyed in 1911 in cooperation with state of California , Scale [1:31680] Scale [1:5] Contour Interval 5 feet - Washington US geogological survey 1914 - 1 Map Coloured Map 52 x 42cm
Datum is mean sea level
Topographic Map
912.794
