History 759 Indians of North America 350 African Americans 344 Politics and government 248 Antiquities 191 Foreign relations 152 Social conditions 143 plus ... Penn dissertations 121 Histoire 117 Slavery 112 Social life and customs 91 Race relations 82 Education 78 Ethnic identity 71 Economic conditions 61 Noirs américains 59 Research 58 American Civilization 57 Study and teaching 54 Cultural assimilation 52 Government relations 48 Psychology 45 Religion 45 Civil rights 44 Emigration and immigration 43 Antislavery movements 40 Attitudes 37 Presidents 37 Politique et gouvernement 35 Public opinion 35 moins ...