History 13,902 Politics and government 3,748 Slavery 2,055 African Americans 1,536 Emigration and immigration 1,345 Societies, etc 1,227 Description and travel 1,194 more ... Jews 1,090 Periodicals 1,051 Biography 993 Social conditions 947 Histoire 913 Foreign relations 892 Sources 887 Regimental histories 818 Social life and customs 803 Race relations 776 Genealogy 775 Presidents 769 Bibliography 619 Campaigns 610 Indians of North America 598 Economic conditions 578 Minorities 553 Germans 552 Travel 544 Immigrants 500 Registers of births, etc 483 Personal narratives 479 Education 478 Civilization 457 Legislators 443 Church records and registers 442 Civil rights 417 Antislavery movements 416 Women 406 Religious life 402 German Americans 384 Labor unions 368 World War, 1939-1945 349 less ...