 
		 
		 
		Water Bureau Newspaper Scrapbook, 1942-1952
 
		Old News: Two unusual underground rescues
 
		Birch’s Views of Philadelphia, 1800
 
		Plans and maps of the Pennypack Creek Watershed in Philadelphia
 
		Early visions of Philadelphia’s airport
 
		Frankford Creek Watershed Historical Timeline
 
		Drawing Dock Creek
 
		Overbrook, as it was. A brief history of the Overbrook neighborhood of Philadelphia, focusing on changes in the natural landscape.
 
		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
