History 750 Indians of North America 349 African Americans 341 Politics and government 245 Antiquities 190 Foreign relations 152 Social conditions 142 lisää ... Penn dissertations 121 Slavery 112 Histoire 109 Social life and customs 92 Race relations 82 Education 78 Ethnic identity 68 Economic conditions 60 Research 58 American Civilization 57 Noirs américains 56 Study and teaching 55 Cultural assimilation 53 Government relations 47 Religion 46 Psychology 45 Civil rights 44 Emigration and immigration 42 Antislavery movements 40 Attitudes 37 Presidents 37 Public opinion 35 Excavations (Archaeology) 33 vähemmän ...