Buried Treasures No. 1: The Franklin Sugar Refinery
The ecology of Center City, Philadelphia (in case you didn’t know there was any)
Map of Frankford Borough, 1845
Map Showing Districts, Boroughs & Townships Incorporated in Consolidation of Philadelphia in 1854
Sewer systems, City of Philadelphia, 1927 and 1929
History of Belfield (1934)
Early photographs of Fairmount and vicinity, 1848
Early visions of Philadelphia’s airport
Frankford Creek Watershed Historical Timeline
Frankford Creek Watershed in the context of the development of Philadelphia’s sewers and sewage treatment system
