Columbia subject headings:
California--Gold discoveries--Sources--Bibliography--Union lists.
Gold mines and mining--California--History--19th century--Sources--Bibliography--Union lists.
Union catalogs--United States.
Harvard subject headings:
California--Gold discoveries--Bibliography.
California--Gold discoveries--Sources--Bibliography--Union lists.
California--History--1846-1850--Bibliography.
California--History--1846-1850--Sources--Bibliography--Union lists.
California--History--1850-1950--Bibliography.
California--History--1850-1950--Sources--Bibliography--Union lists.
California--History--19th century--Bibliography.
Frontier and pioneer life--California--Bibliography.
Gold mines and mining--California--Bibliography.
Gold mines and mining--California--History--19th century--Sources--Bibliography--Union lists.
Union catalogs--United States.
Princeton subject headings:
California--Gold discoveries--Bibliography.
California--History--1846-1850--Bibliography.