History 604 Description and travel 201 Gold discoveries 193 Social conditions 167 Politics and government 95 Race relations 95 Histoire 92 more ... Social life and customs 87 Ethnic relations 83 Frontier and pioneer life 77 Mexican Americans 71 African Americans 70 Overland journeys to the Pacific 61 Gold mines and mining 53 Travel 53 Missions 50 Indians of North America 47 Social aspects 38 Découvertes d'or 37 Immigrants 36 Emigration and immigration 35 Chinese Americans 33 Economic conditions 32 Descriptions et voyages 30 Minorities 30 Voyages to the Pacific coast 30 Civilization 29 Ethnic identity 29 Pioneers 29 Jews 25 less ...