Genealogy 10 Pennsylvania--Genealogy 4 World War, 1914-1918--Personal correspondence 4 Family life--Pennsylvania--Philadelphia 3 Family life--Personal correspondence--20th century 3 Genealogists 3 Voyages and travels 3 more ... War diaries 3 World War, 1914-1918 3 Botany--Eighteenth Century 2 Botany--Nomenclature 2 Czechoslovakia--History--1938-1945 2 Deeds--Germantown (Philadelphia, Pa.)--18th century 2 Europe--Description and Travel--19th century 2 Europe--Description and travel--1919-1944 2 Family life--Pennsylvania--20th century 2 France--Description and travel--19th century 2 Genealogical correspondence 2 Genealogists--Research 2 Genealogy & local history 2 Genealogy--Sources 2 German Americans--Societies, etc 2 German Immigrants--18th century 2 Germans--Genealogy 2 Germantown (Philadelphia, Pa.)--History 2 Germantown (Philadelphia, Pa.)--History--Colonial period, ca. 1600-1775 2 Germany--Description and travel--19th century 2 Mayors--Pennsylvania--Philadelphia 2 Medicine 2 Naturalists--United States--Correspondence 2 Pennsylvania--History--Colonial period, ca. 1600-1775 2 Personal Correspondence 2 Philadelphia (Pa.)--Social problems 2 Publishing--United States--Periodicals--Early 20th Century 2 Social Life and Customs--Europe--19th century 2 Travel 2 Travel--20th Century 2 United States--History--Cold War 2 United States. Army 2 Women--Societies and clubs 2 less ...