Description and travel Travel 347 History 262 Social life and customs 146 Natural history 47 Antiquities 45 Civilization 44 more ... Social conditions 42 Indians of North America 40 Discovery and exploration 34 Politics and government 33 History and criticism 24 Art 23 Voyages and travels 23 Americans 21 Authors, American 20 Homes and haunts 20 Missions 20 Travelers 20 Economic conditions 17 Manners and customs 17 Architecture 15 Cities and towns 15 In literature 15 Frontier and pioneer life 11 British 10 Explorers 10 Foreign relations 10 History, Local 10 Overland journeys to the Pacific 10 less ...