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Start Over You searched for: Repository The Historical and Interpretive Collections of The Franklin Institute Remove constraint Repository: The Historical and Interpretive Collections of The Franklin Institute Subject Water-supply engineering Remove constraint Subject: Water-supply engineering Year 1845 to 1849 Remove constraint Year: <span class="from" data-blrl-begin="1845">1845</span> to <span class="to" data-blrl-end="1849">1849</span>

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Frederick Graff maps, technical drawings, and plans on Philadelphia (Pa.) water engineering projects, circa 1683-1875

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]

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Philadelphia Water Department records and collection on Fairmount Water Works, 1801-1980 (inclusive)

Held at: The Historical and Interpretive Collections of The Franklin Institute [Contact Us]