Dealing with the city’s wastes in the mid-19th century
The Water and Drainage History of Philadelphia: A seven-part course
Down Under!
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Bridge Street Draw, Cofferdam, ca. 1896
Pennsylvania Hospital in Pine Street
Torresdale Conduit work gang, 12/18/1906
Finished Upper Roxborough filters, 1903