doi:10.7916/d8-md2m-7739Saw Mill River Parkway widening in relation to New York City parkway system Triborough Bridge AuthorityTriborough Bridge AuthoritymapscartographicParkways--New York (State)--Westchester County--Maps.Lower Saw Mill River Parkway (N.Y.)Henry Hudson Parkway (New York, N.Y.)Cross Country Parkway (Westchester,Triborough Bridge Authority Maps.