Coal Depot, Richmond, on the Delaware (Picturesque America)
Navy Yard on the Delaware River (Picturesque America)
Plan of Philadelphia, John Hills, 1796
Dauphin and Sydenham car crash, Jan. 17, 1978
Plan and profile of proposed Delaware Seventh St. Sewer, 1850
Diagram Showing Decreased Amount of Dissolved Oxygen in Delaware River, 1913
Delaware River at Arch Street from the New Jersey side, 1914
Cohocksink Sewer System outlet at Laurel Street
Bacteria in Delaware River, Torresdale Filters, 1913
Water, Water Everywhere – Philadelphia Record, 1937-03-14