History 101 Indians of North America 35 Description and travel 23 Frontier and pioneer life 20 Discovery and exploration 19 Wars 13 Spanish 12 Spaniards 11 Antiquities 10 Travel 9 Explorers 8 Mexican Americans 8 Outlaws 7 Pioneers 7 Social conditions 7 Apache Indians 6 In art 6 Social life and customs 6 Campaigns 5 History and criticism 5 History, Military 5 Politics and government 5 Race relations 5 Social aspects 5 American literature 4 Civil rights 4 Colonies 4 Cowboys 4 Ethnic relations 4 Government relations 4