History 193 Politics and government 47 Frontier and pioneer life 41 Social life and customs 29 Mexican Americans 28 Authors, American 21 Governors 21 more ... African Americans 20 Race relations 20 History and criticism 19 Peace officers 19 Outlaws 18 Manners and customs 16 Civil rights 14 Violence 14 Childhood and youth 13 College teachers 13 Pioneers 13 Ranchers 13 Social conditions 13 Family 12 Homes and haunts 12 Soldiers 12 Legislators 11 Philanthropists 11 Politicians 11 World War, 1939-1945 11 Campaigns 10 In literature 10 Officials and employees 10 less ...