Great Central Fair for the U.S. Sanitary Commission (1864 : Philadelphia, Pa.) 4 United States--History--Civil War, 1861-1865--Sanitary Commission--The Great Central Fair for the Sanitary Commission--Philadelphia 4 Centennial Exhibition (1876 : Philadelphia, Pa.) 2 Spouses--Correspondence--19th century 2 United States. Army of the Potomac 2 United States. Army. Corps of Engineers--History--19th century 2 Actors and actresses 1 more ... African Americans--History--Negro Education--Late 19th Century 1 Armenia--History 1 Armenian massacres, 1894-1896 1 Art and Artists--Pennsylvania--Philadelphia--19th century 1 Autographs 1 Autographs--19th century 1 Bull Run, 1st Battle of, Va., 1861 1 Charitable Organizations--Philadelphia 1 Clergymen--19th century 1 Cooper Union--History 1 Cuba--1890-1910 1 Deeds--Philadelphia--19th Century 1 Deeds--Philadelphia--Pennsylvania--18th Century 1 Department stores 1 Disaster Relief--National and International 1 Dreer, Ferdinand J. (Ferdinand Julius), 1812-1902 1 Forests and forestry 1 Freemasons--Philadelphia--19th century 1 Gettysburg, Battle of, Gettysburg, Pa., 1863 1 Hitler, Adolf, 1889-1945--Caricatures and cartoons 1 Hydrographic surveying--Mississippi River 1 Indian Rights Association 1 Indians, Treatment of--North America 1 Johnstown Flood 1 Medicine 1 Meteorology--Observations 1 Mexican War, 1846-1848--Campaigns--Maps 1 Music--Philadelphia--19th century 1 Musicians 1 Mussolini, Benito, 1883-1945--Caricatures and cartoons 1 National security--1939-1945--United States--Posters--Specimens 1 Newspapers--Pennsylvania--Philadelphia 1 Newspapers--Pennsylvania--Philadelphia--20th century 1 less ...