History 62 Frontier and pioneer life 12 Social conditions 10 Pioneers 9 Politics and government 9 African Americans 8 Authors, American 7 Intellectual life 7 Slaves 7 In literature 6 Slavery 6 Social life and customs 6 Antislavery movements 4 Campaigns 4 Educators 4 Fugitive slaves 4 History, Military 4 Homes and haunts 4 Indians of North America 4 Race relations 4 Antiquities 3 Criticism and interpretation 3 Depressions 3 Description and travel 3 Families 3 Generals 3 Historians 3 History and criticism 3 Packhorse librarians 3 Presidents 3