History 662 Frontier and pioneer life 251 Description and travel 190 Indians of North America 155 History and criticism 140 In literature 135 American literature 99 Social life and customs 78 Discovery and exploration 69 Women 66 Travel 63 Social conditions 61 Western stories 52 Territorial expansion 49 Overland journeys to the Pacific 47 Discoveries in geography 41 Economic conditions 41 Pioneers 41 Historiography 40 Social aspects 40 Womyn 39 Cowboys 38 Literature 36 Authors, American 34 Race relations 33 Frontier and pioneer life in literature 32 Manners and customs 31 Water-supply 30 Women pioneers 30 African Americans 29 Environmental conditions 29 Ethnic relations 29 Intellectual life 29 Politics and government 29 Wars 29 Women authors 28 Art, American 27 Civilization 27 Government policy 27 Environmental aspects 26 Public lands 26 Exhibitions 25 Natural history 23 Landscape photography 22 Emigration and immigration 21 Geology 21 Outlaws 21 Water resources development 21 Women and literature 20 Criticism and interpretation 19 Environmental policy 19 Land use 19 Railroads 19 Water rights 19 Explorers 18 American fiction 17 Law and legislation 17 Political aspects 17 Ranch life 17 Fur trade 16 History, Local 16 Homes and haunts 16 Military life 16 Biography 15 Ecology 15 Indians in literature 15 Economic aspects 14 Immigrants 14 Cities and towns 13 Gold mines and mining 13 Government relations 13 Photographers 13 Photography 13 World War, 1939-1945 13 American poetry 12 Families 12 History, Military 12 Natural resources 12 Slavery 12 Western films 12 Women authors, American 12 Antiquities 11 Community life 11 Economic history 11 Gold discoveries 11 Histoire 11 Japanese Americans 11 Management 11 Mines and mineral resources 11 Painting, American 11 Religion 11 African American authors 10 Agriculture 10 Artists 10 Family 10 Historical geography 10 Human ecology 10 Landscapes 10 National characteristics, American 10 National parks and reserves 10