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
