View from front of 322 S. 44th, April 18, 1914
Thomas Run sewer outlet at Cobbs Creek
Delaware River at Arch Street from the New Jersey side, 1914
Bacteria in Delaware River, Torresdale Filters, 1913
Water, Water Everywhere – Philadelphia Record, 1937-03-14
Perkiomen Water Supply Surveys, 1866
Frankford Creek: Sad History of an Urban Stream title page
Logan Demanding Flood Relief, 8/18/38
Sewer Demand Taken to City Hall, 7/25/32
In The Storm’s Track, Philadelphia Record, 1882-09-25