 
		 
		 
		Overbrook, as it was. A brief history of the Overbrook neighborhood of Philadelphia, focusing on changes in the natural landscape.
 
		Newspaper Clipping Scrapbooks of Frederick Graff Jr., Chief Engineer of the Philadelphia Water Department. Part 2: 1858-1871
 
		Leverington Avenue Stormwater Sewer
 
		CITIZENS’ BUSINESS: 1939-1946
 
		Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
