Canals--Pennsylvania 11 Canal construction--19th century 4 Canals and railroads--19th century 3 Canals--Chesapeake and Delaware 2 Delaware & Schuylkill Canal 2 Accounts--19th century 1 Benjamin Phillips (Boat) 1 more ... Canal construction--Pennsylvania--18th century 1 Canals--New Jersey--20th century 1 Canals--Pennsylvania--Delaware and Hudson Canal Company 1 Canals--Pennsylvania--Design and construction 1 Canals--Susquehanna and Tidewater--Plans 1 Centennial Exhibition (1876 : Philadelphia, Pa.) 1 Churches--Delaware Valley 1 Commerce--Philadelphia--19th century 1 Education--Pennsylvania--Printed Materials 1 Engineering--Pennsylvania--Philadelphia 1 Estate administration--19th century 1 Genealogy--Wurts Family 1 Germantown (Philadelphia, Pa.) 1 Germantown (Philadelphia, Pa.)--History 1 Graeme Park, Pa 1 Haviland, John 1 Historians--19th century 1 Historians--Pennsylvania 1 Historical Society of Pennsylvania 1 Historical Society of Pennsylvania--Founding members 1 Historical Society of Pennsylvania--Researchers 1 History of Philadelphia 1 History--Publishing 1 Hobbyists--Pennsylvania 1 Indians--18th century 1 Indians--19th century 1 Internal Improvements--Canals--Delaware 1 Internal Improvements--Canals--Maryland 1 Internal Improvements--Canals--Pennsylvania 1 Investments and Speculation--19th century 1 Land Settlement--Pennsylvania--18th century 1 Land Surveys--18th century 1 Land settlement--Pennsylvania 1 less ...