History 348 Frontier and pioneer life 78 Social life and customs 78 Description and travel 75 Juvenile literature 70 African Americans 47 Histoire 43 more ... Pioneers 37 Pilgrims (New Plymouth Colony) 32 Race relations 32 Overland journeys to the Pacific 25 Discovery and exploration 23 Explorers 20 Incas 20 Women 18 Aztecs 17 Gold discoveries 17 Manners and customs 17 Biography 16 Civil rights 15 Cowboys 15 Indians of South America 15 Travel 15 Buildings, structures, etc 14 Indians of Mexico 14 Social conditions 14 Antiquities 13 Indians of North America 13 Civil rights workers 12 Noirs américains 12 less ...