Presidents' spouses 5 History 4 Spouses--Correspondence-–20th century 4 Family life--Pennsylvania--20th century 3 Presidents 3 Family life--Personal correspondence--20th century 2 Aeronautics, Commercial--Law and legislation--United States 1 more ... Airports--Pennsylvania 1 Ambassadors--United States 1 Ambassadors’ spouses 1 American letters 1 Ancient Arabic Order of the Nobles of the Mystic Shrine for North America 1 Armories--Pennsylvania 1 Coronations--Great Britain--History--20th century 1 Couples 1 Democratic Party (U.S.) 1 Diplomatic and consular service, American 1 Family life--Pennsylvania--Philadelphia 1 Family life--Upper Class--Pennsylvania--Philadelphia--20th century 1 Foreign Relations--United States--Europe--1935-1944 1 Gettysburg, Battle of, Gettysburg, Pa., 1863 1 Governments in exile 1 Husband and Wife--Correspondence 1 Lawyers as authors 1 Love-letters 1 Married people 1 Mexican War, 1846-1848--Campaigns--Maps 1 Nazi propaganda--Poland 1 Personal Correspondence 1 Poland--Foreign relations--United States--Sources 1 Sailing--Atlantic Coast (U.S.) 1 Spouses--Correspondence 1 Spouses--Correspondence--19th century 1 Topographical surveying--United States 1 Trials (Obscenity)--Pennsylvania--Philadelphia 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 United States. Army of the Potomac 1 less ...