The History of Philadelphia's Watersheds and Sewers
This series of seven daguerreotypes of the Fairmount Water Works and vicinity, created on May 22, 1848 by W. S. Porter, is probably the most detailed and the earliest photographic view of this area.
Retaining wall of the Aramingo Sewer, April 2, 1901
Public Health: Report entry for “Full, foul or leaky privies”