Pennsylvania--History--Colonial period, ca. 1600-1775 Pennsylvania--History 4 Mason-Dixon Line 2 Pennsylvania--History--1775-1865 2 United States--History--Colonial period, ca. 1600-1775 2 United States--History--Revolution, 1775-1783 2 Boundary disputes 1 more ... Brandywine, Battle of, Pa., 1777 1 Canals--Chesapeake and Delaware 1 Chronology, Historical 1 Commerce--Philadelphia--19th century 1 Decedents’ estates--Pennsylvania 1 Delaware--Politics and government--17th century 1 Episcopal Church--Pennsylvania--Philadelphia 1 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--Land transfer 1 Indians of North America--Pennsylvania 1 Indians of North America--Pennsylvania--Government relations--History--18th century 1 Indians of North America--Pennsylvania--Philadelphia 1 Indians of North America--Pennsylvania--Treaties 1 Indians--17th century 1 Indians--18th century 1 Indians--19th century 1 Indians--First contact with Europeans 1 Land Settlement--Pennsylvania--18th century 1 Land Settlements--Pennsylvania 1 Land settlement--Pennsylvania 1 Legal issues 1 Maps--Pennsylvania 1 less ...