Drainage area plan, early 19th century
Diagram from sewage treatment plan for Philadelphia, 1912
Down Under, Part 2: Beaver Creek as it appears today
Typhoid Fever and sewage tainted drinking water: An 1889 report from the Philadelphia Board of Health
Dauphin and Sydenham car crash, Jan. 17, 1978
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
Plan of Pine Street Sewer, 1830
Typhoid bacteria diagram, 1905
“A Decidedly Mixed Drink,” April 6, 1899
“Town street scavengers from life,” Kollner, 1844