Columbia subject headings:
Hudson, James F. (James Fairchild), 1846-1915. Railways and the republic.
Railroads and state--United States.
Railroads and state.
Harvard subject headings:
Hudson, James F. (James Fairchild), 1846-1915. Railways and the republic.
Railroads and state--United States.
Railroads and state.
Princeton subject headings:
Hudson, James Fairchild, 1846-1915. The railways and the republic.
Railroads and state--United States.
Railroads and state.