Discovery and exploration 22 Explorers 22 History 22 Spanish 19 HISTORY 13 BIOGRAPHY & AUTOBIOGRAPHY 10 General 10 Historical 10 Politics and government 10 Description and travel 9 Historiography 8 Indians of North America 8 Presidents 8 State & Local 7 Discoveries in geography 5 Histoire 5 Historians 5 Latin Americans 5 Lawyers 5 History and criticism 4 Mexican Americans 4 Politique et gouvernement 4 Travel 4 Biografía 3 Descriptions et voyages 3 Découverte et exploration espagnoles 3 Early accounts to 1600 3 Governors 3 Historia 3 Indians, Treatment of 3