History 385 Frontier and pioneer life 152 Indians of North America 90 Description and travel 71 History and criticism 66 In literature 60 American literature 49 Mais ... Social life and customs 47 Women 45 Discovery and exploration 43 Travel 40 Pioneers 39 Literature 36 Authors, American 30 Territorial expansion 28 Art, American 27 Discoveries in geography 27 Cowboys 26 Social conditions 26 Exhibitions 25 Women pioneers 25 Womyn 24 Manners and customs 23 Western stories 23 Overland journeys to the Pacific 22 Women authors 22 Outlaws 20 Social aspects 20 Race relations 19 African Americans 18 menos ...