Filling Low Land: A Story of Ash-Dumping in the Wingohocking Creek Watershed
Spring Garden Northern Liberties, or Schuylkill Works (1844)
Fairmount Water Powered Works Expansion (1859 to 1861)
Fairmount Water Turbine Wheels (1851)
Fairmount Water Powered Water Works (1822)
Fairmount Steam Works (1815)
Delaware and Kensington Works (1851-1890)
High Pressure Fire Service Stations (1902)
Pipeline being laid in Wissahickon Avenue
James W. Phillips Letter Book, 1904-1913