Plan of Philadelphia, John Hills, 1796
Fairmount Water Powered Works Expansion (1859 to 1861)
Fairmount Water Turbine Wheels (1851)
Fairmount Water Powered Water Works (1822)
Fairmount Steam Works (1815)
High Pressure Fire Service Stations (1902)
Plan of the City of Philadelphia and Adjoining Districts, 1830
Map of the County of Philadelphia from Actual Survey, 1843
Outline Map of the County and City of Philadelphia and Vicinity, 1883
