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Keywords: Frederic-Graff-portrait-cropped.jpg Frederick Graff who designed the Fairmount Water Works in Philadelphia Pennsylvania http //loc gov/pictures/item/pa0837/ HAER-PA 51-PHILA 328-150 Library of Congress Historic American Engineering Record from the Collection of the Franklin Institute undated photocopies of prints of historic views PA 51-PHILA 328-150 PD-USGov Fairmount Water Works Frederick Graff |