Columbia subject headings:
Harvard subject headings:
Mineral industries--United States--History.
Mining claims--United States--History.
Mining law--United States--History.
Princeton subject headings:
Government ownership--Law and legislation--United States--History.
Mines and mineral resources--Government policy--United States--History.
Mines and mineral resources--History.
Mines and mineral resources--West (U.S.)--History.
Mining law--United States--History.