Genealogy 25 World War, 1939-1945 13 Genealogical correspondence 9 Centennial Exhibition (1876 : Philadelphia, Pa.) 8 United States--History--Revolution, 1775-1783 8 World War, 1914-1918 8 Family life--Pennsylvania--20th century 7 more ... Poetry--19th century 7 Polish Americans--Newspapers 7 Genealogy & local history 6 Historians--Research Material 6 Pennsylvania--Genealogy 6 Spouses--Correspondence--19th century 6 Theater--Pennsylvania--Philadelphia 6 Family life--Pennsylvania--19th century 5 Family life--Personal correspondence--19th century 5 Family life--Personal correspondence--20th century 5 Family life--Upper Class--19th century 5 Medicine 5 Newspapers--Philadelphia--19th century 5 Pennsylvania--Politics and government--19th century 5 Social Life and Customs--Upper Class--20th century 5 Theaters--United States--History--20th century 5 Women's history--Pennsylvania--Philadelphia 5 African American civic leaders--Pennsylvania--Philadelphia 4 Charitable Organizations--Philadelphia 4 Diaries--19th century 4 Family life--Pennsylvania--Philadelphia 4 Family life--Upper Class--Pennsylvania--Philadelphia--20th century 4 Genealogists 4 Japanese Americans--Evacuation and relocation, 1942-1945 4 Newspapers--Pennsylvania--Philadelphia--20th century 4 Pennsylvania--History 4 Personal Correspondence 4 Philadelphia (Pa.)--Politics and government--20th century 4 Philadelphia--History 4 Scrapbooks 4 Scrapbooks--19th century 4 Slavery--United States--History 4 Social life and customs--Pennsylvania--Philadelphia (Pa.)--19th century 4 less ...