Down Under III: A walk in the Dobson’s Run Storm Relief Sewer, June 15, 2010
Down Under, Part 2: Beaver Creek as it appears today
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Thomas Run sewer outlet at Cobbs Creek
Thomas Run sewer outlet during construction
1779 Revolutionary War-era map of Philadelphia and environs
Color Diagram of Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia
69th St. Sewer and Culvert across Lansdowne AVe.