History 375 Frontier and pioneer life 147 Indians of North America 88 Description and travel 71 History and criticism 64 In literature 60 American literature 49 more ... Social life and customs 47 Women 43 Discovery and exploration 42 Travel 40 Pioneers 37 Literature 36 Authors, American 30 Art, American 27 Discoveries in geography 26 Social conditions 26 Cowboys 25 Exhibitions 25 Territorial expansion 25 Womyn 24 Manners and customs 23 Western stories 23 Women pioneers 23 Overland journeys to the Pacific 22 Outlaws 21 Social aspects 20 Women authors 20 African Americans 18 Explorers 18 less ...