History 222 Societies, etc 122 Ethnic groups 97 Greek Americans 94 Jews 53 Politics and government 51 Description and travel 47 more ... German Americans 39 Germans 39 Italian Americans 39 Churches 38 African Americans 37 Social conditions 36 Social life and customs 36 Periodicals 31 Indians of North America 30 Italians 29 Sources 29 Almanacs, American 28 Emigration and immigration 28 Immigrants 28 Travel 28 Polish Americans 26 Clergy 24 Histoire 24 Church buildings 22 Lithuanian Americans 22 Education 20 Irish 20 Ethnic relations 18 Irish Americans 18 Manners and customs 18 Puerto Ricans 18 Bibliography 17 Religious life 17 Manuscripts 16 Polish people 15 Genealogy 14 Archives 13 Economic conditions 13 less ...