 
		 
		 
		Map Lovers’ Monday: Philadelphia in 1957, according to the Pennsy
 
		Fairmount Water Works (Picturesque America)
 
		Last gasp of the Schuylkill Interceptor, December 20, 1956
 
		Plan of Philadelphia, John Hills, 1796
 
		Early photographs of Fairmount and vicinity, 1848
 
		Frankford Creek Watershed: A historical overview of the Philadelphia section
