History 1,143 Politics and government 502 Antiquities 395 Social conditions 318 Mayas 227 Social life and customs 197 Economic conditions 179 more ... Indians of South America 173 History and criticism 136 Histoire 118 African Americans 101 Excavations (Archaeology) 94 Criticism and interpretation 90 English drama 87 Emigration and immigration 86 Indians of Central America 83 Foreign relations 64 Religion 62 Indians of Mexico 59 Race relations 58 Jews 55 Manners and customs 53 Agriculture 51 Education 49 Ethnic identity 49 Penn dissertations 49 Incas 42 Colonies 40 Indian pottery 40 Ethnic relations 38 less ...