Columbia subject headings:
California--Gold discoveries.
California--History--1846-1850.
California--History--Pictorial works.
Lithography--California.
San Francisco (Calif.)--History.
Harvard subject headings:
California--Gold discoveries.
California--History--1846-1850.
California--History--Pictorial works.
Lithography--California.
San Francisco (Calif.)--History.
Princeton subject headings: