United States History 101 Politics and government 31 Emigration and immigration 19 Histoire 16 African Americans 13 Race relations 13 more ... Minorities 12 Registers of births, etc 12 Genealogy 11 Indexes 10 Description and travel 9 Biography 8 Regimental histories 8 Social life and customs 8 Church history 7 Social conditions 7 Bibliography 6 Civilization 6 Economic conditions 6 Ethnic relations 6 Germans 6 Revolution 6 Campaigns 5 Ethnic groups 5 Slavery 5 Societies, etc 5 Sources 5 Auswanderung 4 Fiction 4 Immigrants 4 Periodicals 4 Poles 4 Study and teaching 4 history 4 Canada 3 Census, 1850 3 Chronologie 3 Civil War, 1861-1865 3 Education 3 less ...