The Schuylkill Navigation: A Journey on the Historic Nineteenth Century Waterway
Annual reports and other documents relating to Philadelphia’s water supply system, 1796-1992
PWD Celebrates Black History Month
Birch’s Views of Philadelphia, 1800
Thomas Mill Covered Bridge over Wissahickon Creek (Picturesque America)
Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Requiem for a stream: A brief history of Dobson’s Run
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
Centre Square Water System
