History 667 Frontier and pioneer life 255 Description and travel 189 Indians of North America 154 History and criticism 140 In literature 136 American literature 99 更多 ... Social life and customs 77 Discovery and exploration 69 Women 67 Travel 64 Social conditions 61 Western stories 52 Territorial expansion 49 Overland journeys to the Pacific 47 Pioneers 43 Discoveries in geography 41 Economic conditions 41 Social aspects 40 Cowboys 39 Historiography 39 Womyn 39 Literature 37 Race relations 35 Authors, American 34 Frontier and pioneer life in literature 32 Women pioneers 32 Manners and customs 31 African Americans 30 Ethnic relations 30 少 ...