


Birch’s Views of Philadelphia, 1800

Newspaper Clipping Scrapbooks of Frederic Graff Jr.,Chief Engineer of the Philadelphia Water Department: Part 1, 1854-1857

Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871

From Creek To Sewer

The Water and Drainage History of Philadelphia: A seven-part course

Wood truss drawbridge, Orthodox Street over Frankford Creek, 1899 [Detail]

State Street pipeline construction, 1904

New Mill House at Fairmount

Baldwin Locomotive Works
