Estate administration--19th century 3 Genealogy--Burd Family 3 History 3 Pennsylvania--History--Colonial period, ca. 1600-1775 3 United States--History--Revolution, 1775-1783 3 West Indies--Commerce 3 Commerce--Philadelphia--18th century 2 more ... Estate administration--18th century 2 French and Indian War 2 International trade--18th century 2 Native Americans 2 Pennsylvania--History 2 Politics and Government--Pennsylvania--18th century 2 Quakers--Pennsylvania--18th century 2 Social Life and Customs--18th century 2 Spouses--Correspondence--18th century 2 Trade--West Indies--18th century 2 United States--History--Revolution, 1775-1783--Loyalists 2 "The Holy Experiment." 1 Accounts--18th century 1 Alaska--1867 boundary dispute 1 Art Historians--United States--20th century 1 Art and artists--20th century 1 Art and artists--Pennsylvania--Philadelphia 1 Art, American--18th century 1 Artists--Pennsylvania--Philadelphia--20th century 1 Autographs 1 Berks County (Pa.)--History 1 Berks County (Pa.)--History--18th century 1 Botany--Eighteenth Century 1 Botany--Nomenclature 1 Botany--Surveying 1 Boundary disputes 1 Brazil--Description and Travel 1 Building--Materials 1 Canals--Chesapeake and Delaware 1 Cartography--19th century 1 Centennial Exhibition (1876 : Philadelphia, Pa.) 1 Chronology, Historical 1 Clubs and Associations--20th Century 1 less ...