Columbia subject headings:
Pratt, Julius H. (Julius Howard), 1821-1909.
Harvard subject headings:
Businesspeople--United States--Biography.
California--Description and travel.
California--Gold discoveries.
California--History--1846-1850.
Industrialists--United States--Biography
Montclair Railway Company.
Pratt, Julius H. (Julius Howard), 1821-1909.
Railroads--Design and construction
Railroads--New Jersey
Princeton subject headings:
Pratt, Julius H. (Julius Howard), 1821-1909.