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Natural Environment
Delaware River at Arch Street from the New Jersey side, 1914
Car 5615, later P-16 and the second D-31, Brill, 1911, Curtis C-1112 trucks
Fairmount Park, bird’s eye view from Lemon Hill, detail
Allegheny Avenue Sewer at Pier 126, 1918
Plan for the Collection, Treatment and Disposal of Sewage, 1914