Watersheds Delaware River Watershed

Map Lovers’ Monday: AQUA, in the beginning

Philadelphia harbor and rivers chart with points of interest

Map of Philadelphia Harbor, Delaware and Schuylkill, 1912

Old U. S. Navy Yard

Old U. S. Navy Yard

Coal Depot, Richmond, on the Delaware (Picturesque America)

Philadelphia Navy Yard, July 1872

CITIZENS’ BUSINESS: 1939-1946

Philadelphia the Manufacturing and Industrial Capital map, 1906

Henry Disston & Sons, Keystone Saw, Tool, Steel and File Works, 1884 (2004.007.0005)

Henry Disston & Sons Keystone Saw Works