Philadelphia Navy Yard, July 1872
		Queen Lane Pumping Station, proposed design
		Darby, Delaware County, Pennsylvania, 1877
		Ground Plan, Great Central Sanitary Fair, Philadelphia
		Privy Cleaning Receipt, 1885
		Mill Creek Sewer under construction, 1883
		“A Decidedly Mixed Drink,” April 6, 1899
		Portrait of Benjamin Henry Latrobe
		Images from “A Day in the Ma’sh” by Maurice F. Egan, Scribner’s Monthly, July 1881
		Main Pumping Stations for Philadelphia Drinking Water