 
		 
		 
		History of Belfield (1934)
 
		Frankford Creek Watershed Historical Timeline
 
		Drawing Dock Creek
 
		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
 
		Board of Health Newspaper Clipping Scrapbooks at City Archives of Philadelphia, 1891-1908
 
		Sewers, Pollution, and Public Health in 19th Century Philadelphia
 
		CITIZENS’ BUSINESS: 1939-1946
 
		Petition of manufacturers along the Schuylkill River in Philadelphia for a new upstream water supply, 1868
 
		Visions of the Schuylkill, 1884 and Now
