Ralph Greenhill

Image Not Available for "Industrial wallpaper" - Dipping room, Fittings Ltd., Oshawa, Ontario from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for Jeddo #1 Breaker, Jeddo, Pa., from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for Lake & rail elevator, Buffalo, N.Y., from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for London Soap Company (Large soap kettle, with small iron steam-jacketted transfer kettle to melt large fats in foreground)

Image Not Available for London Soap Factory, London, Ontario from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for Luise Pflug with Esther and Ursula

Image Not Available for Main Columns & one flywheel, Hamilton Pumping Station from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for Martin's Creek Viaduct, D.L. & W.R.R., Kingsley, Pa., from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for Martin's Creek Viaduct, Kingsley, Pa.

Image Not Available for Michigan Central Arch Bridge

Image Not Available for Michigan Central Arch Bridge, Niagara Falls, N.Y., from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984

Image Not Available for Ohio St. Bridge & Standard Elevator, Buffalo, N.Y., from: Aspects of Industrial Archeology: Machines and Structures, 1977-1984