Columbia subject headings:
Businessmen--United States--Biography.
Heintzelman, Samuel Peter, 1805-1880.
Industries--Arizona--History.
Sonora Exploring and Mining Company--History.
Harvard subject headings:
Arizona--History--19th century.
Businessmen--United States--Biography
Businesspeople--United States--Biography.
Heintzelman, Samuel Peter, 1805-1880.
Industries--Arizona--History.
Sonora Exploring and Mining Company--History.
Princeton subject headings: