Indian--White Relations--18th century 3 Spanish-American War, 1898--Campaigns--Cuba 2 Spanish-American War, 1898--Campaigns--Puerto Rico 2 African Americans--History--Negro Education--Late 19th Century 1 Armenia--History 1 Armenian massacres, 1894-1896 1 Astronomy--18th century 1 more ... Charitable Organizations--Philadelphia 1 Clubs and Associations--Social 1 Conestoga Indians--History 1 Conestoga Massacre, Pa., 1763 1 Cuba--1890-1910 1 Dakota Indians--Government relations 1 Dakota Indians--Wars, 1890-1891 1 Disaster Relief--National and International 1 Ethical culture movement 1 Forests and forestry 1 Hitler, Adolf, -- 1889-1945 -- Assassination attempts 1 Indian Rights Association 1 Indian Territories--18th century 1 Indians of North America--Government relations--Pennsylvania 1 Indians of North America--Rites and Ceremonies--18th century 1 Indians--Six Nations Coalition--18th century 1 Johnstown Flood 1 Katyn Massacre, Katyn', Russia, 1940 1 Land Settlement--Pennsylvania--18th century 1 Massacres--Pennsylvania--18th century 1 Mathematics--18th century 1 Monuments--Paoli Massacre--19th century 1 Moravians--Pennsylvania--18th century 1 Native Americans--White perceptions of 1 Newspapers--Pennsylvania--Philadelphia 1 Newspapers--Pennsylvania--Philadelphia--20th century 1 Paxton Boys 1 Pennsylvania--History--French and Indian War, 1755-1763 1 Pennsylvania--History--Revolution, 1775-1783 1 Pennsylvania--Lancaster County--18th century 1 Pennsylvania--Lebanon--19th century 1 Pennsylvania--Politics and government--18th century 1 Philadelphia (Pa.)--Newspapers 1 less ...