Torresdale Conduit work gang, 12/18/1906
Finished Upper Roxborough filters, 1903
Apparatus for testing model turbine wheels used at Fairmount, 1859-60
Duplex Pumping Engine, Belmont Works
Electric Pump Installations at Lardner’s Point Pumping Station
Engine House, Belmont Works
New Mill House at Fairmount
Plan for the Collection, Treatment and Disposal of Sewage, 1914
Pennypack Sewage Treatment Works, 1914
Sewer construction, Rock Run, 1922
