Down Under, Part 2: Beaver Creek as it appears today
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Color Diagram of Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia
Including sewer pipes in all their sizes, and in all their uses, for stormwater and sanitary waste, combined and separate sewers, and intercepting sewers.