Image Beyond Steel Lehigh Coal and Navigation Company Records - Item 3899: Chart of the Delaware River (Rolled, Copy) This map shows a chart of the Delaware River drawn from surveys made under the direction of the Lehigh Coal and Navigation Company. View Item
Image Beyond Steel Lehigh Coal and Navigation Company Records - Item 9: Philadelphia Water Supply Company Proposed Aqueduct Lines This map shows the Philadelphia Water Supply Company's proposed aqueduct lines to supply the city of Philadelphia with 250 million gallons per day of filtered water from the Delaware River by gravity and steam pumping. View Item