![](https://waterhistoryphl.org/wp-content/uploads/graff-scrapbook1-2004071-2004.071.0001.015-crop.jpg?w=300)
![](https://waterhistoryphl.org/wp-content/uploads/graff-scrapbook1-2004071-2004.071.0001.015-crop.jpg?w=300)
![](https://waterhistoryphl.org/wp-content/uploads/graff-scrapbook2-125-crop.jpg?w=300)
Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
![Duplex Pumping Engine, Belmont Works](https://waterhistoryphl.org/wp-content/uploads/2004.057.0074.002-1-scaled.jpg?w=300)
Includes steam engines, water-powered wheels or turbines, and gas-fired and electric pumps, used to provide power that operates pumps.