


Drainage area plan, early 19th century

Last gasp of the Schuylkill Interceptor, December 20, 1956

You would not have wanted to drink it: Philadelphia’s water supply in 1884

Frankford Creek Watershed: A historical overview of the Philadelphia section

Frankford Creek Watershed Historical Timeline

Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010

Drawing Dock Creek

Down Under, Part 2: Beaver Creek as it appears today

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

Board of Health Newspaper Clipping Scrapbooks at City Archives of Philadelphia, 1891-1908
