Frontier and pioneer life 1,097 History 605 Indians of North America 128 Pioneers 114 Social life and customs 105 Women pioneers 55 Cowboys 50 more ... Description and travel 50 Wars 49 Race relations 42 History and criticism 41 Frontier and pioneer life in literature 39 Ranch life 38 Social conditions 37 Ethnic relations 35 Territorial expansion 34 Outlaws 33 Women 31 American literature 28 Families 28 Gold discoveries 28 Overland journeys to the Pacific 27 Discovery and exploration 26 Military life 26 Social aspects 26 Cattle trade 24 Politics and government 23 African Americans 21 Historiography 21 In literature 21 less ...