Privy Cleaning Receipt, 1885
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
Plan of Pine Street Sewer, 1830
Mill Creek Sewer under construction, 1883
Norman Lofton inspects sewer at Ditman and Sheffield, 1987
“Philadelphia Underground,” Jan. 29, 1961
Captain Sewer and Michael Nutter, 1998
30th Street Sewer
State Street pipeline construction, 1904
Upper Roxborough filter beds under construction, July 1902
