History 12,182 African Americans 3,099 Societies, etc 2,618 Politics and government 2,570 Jews 2,465 Periodicals 2,133 Description and travel 1,947 more ... Emigration and immigration 1,814 Histoire 1,595 Social conditions 1,564 Almanacs, American 1,486 Religious life 1,472 Biography 1,315 Ethnic groups 1,313 Social life and customs 1,285 Germans 1,255 Polish Americans 1,111 Education 1,019 Travel 1,009 German Americans 1,008 Bibliography 984 Race relations 918 Indians of North America 869 Sources 847 Genealogy 810 Minorities 794 Churches 789 Economic conditions 762 Fiction 742 Anniversaries, etc 716 Polish people 712 Lutheran Church 709 World War, 1939-1945 674 Italian Americans 654 Study and teaching 646 Radicalism 588 Clergy 567 Immigrants 559 Communism 555 Civilization 550 less ...