History 400 Indians of North America 383 HISTORY 206 General 187 SOCIAL SCIENCE 141 Indian art 109 Social conditions 83 more ... Discovery and exploration 81 Americas (North, Central, South, West Indies) 75 POLITICAL SCIENCE 66 BUSINESS & ECONOMICS 65 Birds 65 Social aspects 65 Antiquities 64 NATURE 60 SCIENCE 58 Emigration and immigration 57 History and criticism 54 Colonies 51 Religion 51 Ecology 48 Missions 48 Discoveries in geography 47 Social life and customs 45 Economic conditions 44 Life Sciences 44 Description and travel 42 Ethnic Studies 40 Indians, Treatment of 40 Ethnic relations 38 less ...