Description and travel Travel 1,227 History 992 Descriptions et voyages 858 Social life and customs 428 Indians of North America 292 Natural history 198 更多 ... Discovery and exploration 191 Histoire 182 Frontier and pioneer life 146 Manners and customs 118 Overland journeys to the Pacific 113 Social conditions 99 Politics and government 84 Antiquities 80 Indians of South America 80 History, Local 78 Mœurs et coutumes 77 Economic conditions 76 Publications by Graduates 67 Gold discoveries 66 Indiens d'Amérique 62 Journeys 62 Explorers 60 Historic buildings 51 Slavery 49 Fur trade 44 Discoveries in geography 43 Mayas 43 Civilization 41 少 ...