History 228 Frontier and pioneer life 76 History and criticism 48 In literature 41 Literature 39 Travel 37 Indians of North America 36 more ... Description and travel 34 Social life and customs 32 American literature 29 Manners and customs 26 Social conditions 24 Discovery and exploration 21 Discoveries in geography 20 Social aspects 18 Pioneers 17 Territorial expansion 17 Ecology 16 Western stories 16 Environmental conditions 15 Histoire 15 Historiography 15 Authors, American 14 Race relations 14 Intellectual life 13 Politics and government 13 Economic conditions 12 Economic history 12 Women 12 Cowboys 11 less ...