History 1,223 Societies, etc 264 Politics and government 234 Description and travel 221 Ethnic groups 206 Census records 198 Churches 195 more ... Greek Americans 165 Jews 147 African Americans 124 Social conditions 123 Sources 122 Social life and customs 121 Clergy 111 Registers of births, etc 97 Periodicals 96 Indians of North America 95 Biography 90 Italian Americans 86 Genealogy 81 Education 78 Emigration and immigration 78 Legislators 69 Religious life 68 Germans 66 Iroquois Indians 65 German Americans 64 Histoire 64 Regimental histories 63 Lawyers 62 Immigrants 59 Presbyterian 55 Italians 53 Polish Americans 52 Bibliography 50 Episcopal 45 Irish Americans 45 Travel 45 Physicians 43 Puerto Ricans 43 less ...