Family life--Personal correspondence--19th century 3 Family life--Personal correspondence--20th century 3 Genealogy 3 Indians of North America 3 World War II, 1939-1945--Personal Correspondence--Home front 3 AIDS (Disease) 2 African American abolitionists 2 more ... African Americans 2 Archives 2 Bibliography 2 Business--History--Pennsylvania--Philadelphia--20th century 2 Centennial Exhibition (1876 : Philadelphia, Pa.) 2 Clubs and Associations--20th Century 2 Clubs and Associations--Philadelphia--20th century 2 Coal mines and mining--Pennsylvania 2 Discrimination in housing 2 Family life--Pennsylvania--19th century 2 Family life--Pennsylvania--20th century 2 Family life--Upper Class--Pennsylvania--Philadelphia--20th century 2 Family photographs 2 Floods--Pennsylvania--Johnstown (Cambria County) 2 Forest nurseries 2 Forests and forestry 2 Freemasons--Philadelphia--19th century 2 Gay rights--United States 2 Government relations 2 Gymnastics 2 Hispanic American neighborhoods--Pennsylvania--Philadelphia 2 History 2 Indians, Treatment of 2 Ironwork 2 Italian Americans--Politics and government--20th century 2 Land surveys 2 Lawyers--Pennsylvania--Philadelphia--20th century 2 Manuscripts 2 Manuscripts, American 2 Medicine 2 Museums--Pennsylvania--Philadelphia--20th century 2 Musicians 2 Musicians--Pennsylvania--Philadelphia 2 less ...