Land Settlement--Pennsylvania--18th century 6 Bookkeeping barter--18th century 1 Canals--Chesapeake and Delaware 1 Commerce--Philadelphia--19th century 1 Conestoga Indians--History 1 Conestoga Massacre, Pa., 1763 1 Connecticut--Boundaries 1 more ... Estate administration--19th century 1 Germantown (Philadelphia, Pa.) 1 Germantown (Philadelphia, Pa.)--History 1 Graeme Park, Pa 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 of North America--Pennsylvania--Treaties 1 Indians--18th century 1 Indians--19th century 1 Land Settlement--Connecticut--18th century 1 Land Settlement--Connecticut--19th century 1 Land Settlement--Pennsylvania--19th century 1 Land settlement--Pennsylvania 1 Maps--Pennsylvania 1 Maps--Pennsylvania--Bucks County 1 Maps--Pennsylvania--Philadelphia County 1 Mason-Dixon Line 1 Paxton Boys 1 Pennsylvania Regiment--Officers 1 Pennsylvania Views 1 Pennsylvania Views--19th century 1 Pennsylvania--Boundaries 1 Pennsylvania--Description and travel--19th century 1 Pennsylvania--History 1 Pennsylvania--History--1775-1865 1 Pennsylvania--History--17th and 18th centuries 1 Pennsylvania--History--Colonial period, ca. 1600-1775 1 less ...