Columbia subject headings:
Bridges--Hudson River (N.Y. and N.J.)--History.
Poughkeepsie Bridge Company.
Railroad bridges--New York (State)--Poughkeepsie--History.
Harvard subject headings:
Bridges--Hudson River (N.Y. and N.J.)--History.
Poughkeepsie Bridge Company.
Poughkeepsie Railroad Bridge (Poughkeepsie, N.Y.)--History.
Railroad bridges--New York (State)--Poughkeepsie--History.
Princeton subject headings:
Poughkeepsie Bridge Company.
Poughkeepsie Railroad Bridge (Poughkeepsie, N.Y.)--History.
Railroad bridges--New York (State)--Poughkeepsie--History.