Description and travel History 1,412 Travel 999 Social life and customs 873 Natural history 290 Social conditions 282 Voyages and travels 276 more ... Indians of North America 257 Discovery and exploration 205 Women 169 Politics and government 155 Slavery 154 Antiquities 148 Frontier and pioneer life 124 Economic conditions 118 History and criticism 111 History, Local 99 Civilization 95 Slave trade 90 Tourism 87 Missions 84 Geography 81 Early works to 1800 80 Overland journeys to the Pacific 78 Colonization 71 African Americans 65 Commerce 65 Colonies 64 Environmental conditions 59 Foreign relations 58 less ...