World War, 1939-1945 2 Academy of Music (Philadelphia, Pa.) 1 Aeronautics, Commercial--Law and legislation--United States 1 Airports--Pennsylvania 1 Ambassadors--United States 1 Ambassadors’ spouses 1 Ancient Arabic Order of the Nobles of the Mystic Shrine for North America 1 more ... Armories--Pennsylvania 1 Artists--United States 1 Canteens (Establishments) 1 Centennial Exhibition (1876 : Philadelphia, Pa.) 1 Democratic Party (U.S.) 1 Diplomatic and consular service, American 1 Emergency Aid of Pennsylvania--Belgian Relief Committee 1 Foreign Relations--United States--Europe--1935-1944 1 Governments in exile 1 Nazi propaganda--Poland 1 Poland--Foreign relations--United States--Sources 1 Recreation centers 1 Soldiers--United States--History--20th century 1 Soldiers--United States--Portraits 1 United States Army 1 United States--Foreign relations--Poland--Sources 1 United States--Foreign relations--Spain--Sources 1 United States--History--Cold War 1 War relief--Pennsylvania--Philadelphia 1 World War I. 1 World War II 1 World War II, 1939-1945--Diplomatic Service 1 World War, 1914-1918--Civilian relief--Belgium 1 World War, 1914-1918--Civilian relief--France 1 World War, 1914-1918--Relief 1 World War, 1939-1945--Causes 1 World War, 1939-1945--Civilian relief 1 World War, 1939-1945--Journalism 1 World War, 1939-1945--Photography 1 World War, 1939-1945--Theater and the war 1 Yalta Conference (1945) 1 less ...