Description and travel Travel 765 History 688 Social life and customs 433 Social conditions 149 Politics and government 140 Indians of North America 109 more ... Civilization 96 Antiquities 93 Discovery and exploration 93 Natural history 93 Homes and haunts 86 Economic conditions 76 History and criticism 56 Frontier and pioneer life 45 In literature 45 History, Local 44 Travelers 41 Authors, American 39 Voyages and travels 39 Missions 37 Americans 33 Explorers 31 British 30 Indians of South America 30 Overland journeys to the Pacific 30 Slavery 30 Geography 29 Historic buildings 29 African Americans 27 less ...