Ethnic groups 3 Merchants--Delaware--19th century 3 Pennsylvania--History--Colonial period, ca. 1600-1775 3 Societies, etc 3 Canals and railroads--19th century 2 Canals--Chesapeake and Delaware 2 Churches--Delaware Valley 2 more ... Court Records--Delaware--18th century 2 Delaware & Schuylkill Canal 2 Delaware County (Pa.) 2 Delaware River Bridge 2 Delaware River--Views--20th century 2 Irish Americans 2 Pennsylvania--History--17th and 18th centuries 2 Quakers--Philadelphia--19th century 2 Surveys--Delaware 2 Accounts--18th century 1 Accounts--19th century 1 American Swedish Historical Museum (Philadelphia, Pa.) 1 Architecture--20th Century 1 Baptists--Delaware 1 Battleship "Wyoming" 1 Benjamin Franklin Bridge 1 Blacksmiths-Delaware-19th Century 1 Breakwaters--Delaware River 1 Bridges, Construction--Pennsylvania and New Jersey 1 Bridges--Delaware River--20th century 1 Canals--Pennsylvania 1 Canals--Pennsylvania--Delaware and Hudson Canal Company 1 Cape Henlopen 1 Cemeteries--Delaware--19th century 1 Centennial Exhibition (1876 : Philadelphia, Pa.) 1 Charitable organizations--Pennsylvania--Delaware County 1 Chester County (Pa.)--History--18th century 1 Church Records--Delaware--19th century 1 Coal--Shipping--Philadelphia--20th century 1 Commerce--19th Century 1 Commerce--Philadelphia--19th century 1 Committee on Alleged Decadence of the Port 1 Composition (Music) 1 less ...