 
		 
		 
		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
 
		Kensington Water Supply in 1883
