Societies, etc History 731 Periodicals 494 Ethnic groups 312 Polish Americans 181 Jews 169 Irish Americans 115 more ... Emigration and immigration 94 German Americans 84 Slovak Americans 83 Polish people 82 Greek Americans 80 Medicine 78 Indians of North America 75 Genealogy 74 Directories 68 African Americans 65 Anniversaries, etc 64 Associations 57 Germans 53 Slovaks 50 Religious life 49 Temperance 45 Slavery 44 Charities 43 Italian Americans 43 Lithuanian Americans 43 Gymnastics 41 Fraternal organizations 40 Congresses 35 Political activity 34 Agriculture 33 Minorities 33 Ukrainian Americans 33 Societies 32 Study and teaching 31 Armenian Americans 28 Education 28 Missions 27 Women 27 less ...