Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
New Mill House at Fairmount
Water Works Standpipe, 1853
Southeast Sewage Treatment Works diagram, 1955
Outside Sprinkling Filters, Spring Garden Sewage Experiment Station, 1911
Devereaux Street Sewer, Philadelphia magazine, 1911
State Road triple pipeline construction, 1904