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Contra Costa County (Calif.) -- History -- Maps. ; Local history -- Contra Costa County (Calif.). ; School districts -- California -- Contra Costa County -- History -- Maps.;
Contra Costa County (Calif.) -- History -- Maps. ; Local history -- Contra Costa County (Calif.). ; Contra Costa County (Calif.). -- Board of Supervisors -- Election districts -- History -- Maps.;
Contra Costa County (Calif.) -- Maps. ; Local history -- Contra Costa County (Calif.). ; Census districts -- California-- Contra Costa County -- History -- Maps.
1 map : b&w ; 51 x 89 cm. + 1 correction (18 x 16 cm.)
Contra Costa County (Calif.) -- Maps. ; Local history -- Contra Costa County (Calif.). ; Judicial districts -- California -- Contra Costa County -- History -- Maps.
Contra Costa County (Calif.) -- Maps. ; Local history -- Contra Costa County (Calif.). ; School districts -- California -- Contra Costa County -- History -- Maps.
Contra Costa County (Calif.) -- Maps. ; Local history -- Contra Costa County (Calif.). ; Population forecasting -- California -- Contra Costa County -- Statistics -- History -- Maps.
Contra Costa County (Calif.) -- Maps.; Local history -- Contra Costa County (Calif.).; Contra Costa County (Calif.). -- Board of Supervisors -- Election districts -- History -- Maps.
Local history -- Contra Costa County (Calif.). ; Land grants -- California -- Contra Costa County -- Maps. ; Contra Costa County (Calif.) -- History -- Maps.;
Local history -- Contra Costa County (Calif.). ; San Ramon Valley (Calif.) -- History -- Maps. ; Land grants -- California -- Contra Costa County -- Maps.;
Local history -- Contra Costa County (Calif.). ; San Ramon Valley (Calif.) -- History -- Maps. ; Land grants -- California -- Contra Costa County -- Maps.;
Contra Costa County (Calif.).; Local history -- Contra Costa County (Calif.).; Maps -- 1840-1850.; Mines and mineral resources -- California.;
“Mining map of California 1850, Map of the Mining District of California by Wm. A. Jackson”. The legend (“Explanation”) includes symbols for: “City or Town, Ranch, Workings for Gold, Indian Villages”. The area of the map includes a section of...