Undr
David Plowden 
Canadian Pacific Railway,1960
David Plowden
Hostler, Canadian National Railways, Hamilton, Ontario, 1959
David Plowden
From “David Plowden Archive. Yale Collection of Western Americana”
David Plowden
Grain elevators Railroads, 1971
David Plowden
Canadian Pacific Railway Company, 1960
David Plowden
Yaquina Bay Bridge in Oregon, 1968.
Great Northern Railway Extra 3387 East
photo by David Plowden; Near Delano, Minnesota, 1956
(melisaki)