United States--History--Civil War, 1861-1865--Battle of Gettysburg, July 1-3, 1863 7 United States--History--Civil War, 1861-1865--Personal narratives 5 Women's history--Patriotic activity--World War I. 3 World War I. 3 Liberty Loan campaigns--World War I--campaigns 2 United States--History--Civil War, 1861-1865--Camp Life 2 United States--History--Civil War, 1861-1865--Personal Correspondence 2 more ... United States. Army. American Expeditionary Forces, 1917-1919 2 World War, 1914-1918--Home front 2 Aeronautics, Commercial--Law and legislation--United States 1 African American Women--Patriotic activity--World War I. 1 Airports--Pennsylvania 1 Alpine Views--Austria--20th century 1 Ambassadors--United States 1 Ambassadors’ spouses 1 Ancient Arabic Order of the Nobles of the Mystic Shrine for North America 1 Armories--Pennsylvania 1 Arts in architecture 1 Austria--Description and travel 1 Austria--Kings and rulers, Emperors, Queens, etc 1 Austria-Hungary--History--World War I, 1914-1918 1 Bessemer process 1 Brinton, Clarence C 1 Bull Run, 1st Battle of, Va., 1861 1 Business records--Pennsylania--Philadelphia--19th century 1 Church societies 1 Churches 1 Coal Industry--19th century 1 Coal Industry--20th century 1 Coal mines and mining--Pennsylvania 1 Coal mines and mining--West Virginia--20th century 1 Costume, Italian 1 Democratic Party (U.S.) 1 Diplomatic and consular service, American 1 Engineering--Problems, exercises, etc 1 Ethnic groups 1 Family life--Pennsylvania--20th century 1 Family life--Personal correspondence--20th century 1 Folk dancing 1 Folk dancing, Italian 1 less ...