History 5,004 African Americans 4,952 Almanacs, American 2,085 Societies, etc 1,870 German Americans 1,525 Polish Americans 1,254 Religious life 1,232 more ... Cooking, American 1,110 Periodicals 943 Social conditions 934 Race relations 836 Ethnic groups 805 Italian Americans 757 Politics and government 703 Social life and customs 667 American literature 657 Almanacs, German-American 632 Sermons, American 625 Churches 593 Education 570 Irish Americans 565 Histoire 563 Civil rights 549 Emigration and immigration 548 Slovak Americans 538 History and criticism 512 Germans 511 Greek Americans 473 Polish people 472 Biography 465 Slavery 457 Lithuanian Americans 433 Japanese Americans 431 Bibliography 410 Genealogy 400 Church societies 376 American poetry 345 Anniversaries, etc 330 American fiction 315 Employment 304 less ...