Sewer worker Anthony Holston enters sewer, 1990
Manholes like this give access to city’s sewer system, 1961
Sewer Inspections: Vintage Images
Thomas Run sewer outlet at Cobbs Creek
Thomas Run sewer outlet during construction
“Philadelphia Underground,” Jan. 29, 1961
69th St. Sewer and Culvert across Lansdowne AVe.
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
Plan for the Collection, Treatment and Disposal of Sewage, 1914
Devereaux Street Sewer, Philadelphia magazine, 1911