Travel Description and travel 425 History 230 Social life and customs 92 Voyages and travels 65 Authors, American 45 Social conditions 44 more ... Tourism 42 Natural history 39 Discovery and exploration 38 History and criticism 38 Americans 32 Politics and government 32 British 30 History, Local 23 Travelers 22 Civilization 21 Health aspects 21 In literature 20 Homes and haunts 19 Explorers 18 Indians of North America 18 Intellectual life 18 Social aspects 18 Antiquities 17 Travel in literature 16 African Americans 15 Foreign relations 15 Women 15 Authors, English 14 less ...