Periodicals 211 History 162 Charities 129 Societies, etc 94 Education 82 Poor 82 Railroads 79 more ... Services for 79 African Americans 67 Finance 54 Indians of North America 52 Young Men's Christian associations 36 Emigration and immigration 30 Slavery 26 Antislavery movements 24 Freed persons 23 Schools 23 Missions 22 Canals 21 Hospitals 21 Women 21 Fraternal organizations 20 Government relations 19 Politics and government 19 Regimental history 19 Sources 19 Registers 18 Streets 18 Jews 17 Bibliography 14 Colonization 14 Archives 13 Geology 13 German Americans 13 Libraries 12 Social conditions 12 Statistics 12 Agriculture 11 Coal mines and mining 11 Prisons 11 less ...