Local history -- Contra Costa County (Calif.).; Harrison, John, H., 1886 -; Work.; El Sobrante (Calif.) -- History.; American Smelting and Refining Company -- History.;
Brown, Thomas A., 1823-1889.; Local history -- Contra Costa County (Calif.).; Concord (Calif.) -- History.; Newspapers -- California -- Concord -- History.
Brown, Thomas A., 1823-1889.; Local history -- Contra Costa County (Calif.).; Real property -- California -- Martinez -- History.; Land tenure -- California -- Martinez -- History.;
Brown, Thomas A., 1823-1889.; Local history -- Contra Costa County (Calif.).; Real property -- California -- Contra Costa County -- History.; Land tenure -- California -- Contra Costa County -- History.;
Local history -- Contra Costa County (Calif.).; American Smelting and Refining Company -- History.; American Smelting and Refining Company.; Asarco Inc.; Asarco Inc. -- History.; Smelting.;
Local history -- Contra Costa County (Calif.).; Pittsburg (Calif.) -- History.; Cities and towns.; Coal trade.; Coal mining.; Coal mines and mining.; Ghost towns.; Extinct cities.;
Explosions.; Local history -- Contra Costa County (Calif.).; Contra Costa County (Calif.).; Pinole (Calif.) -- History.; Relocation (Housing).; Richmond (Calif.) -- History.;
Brown, Thomas A., 1823-1889.; Local history -- Contra Costa County (Calif.).; Translating services -- English-Spanish -- Contra Costa County -- History.