History 35,823 Politics and government 5,943 Genealogy 4,676 African Americans 4,564 Description and travel 4,267 Biography 4,070 Church records and registers 3,843 more ... Periodicals 3,256 Sources 3,040 Societies, etc 2,837 Jews 2,687 Census records 2,597 Deeds 2,532 Indians of North America 2,525 Slavery 2,441 Social life and customs 2,288 Streets 2,218 Registers of births, etc 2,071 Social conditions 1,990 Bibliography 1,859 Emigration and immigration 1,819 Education 1,737 Churches 1,650 Probate records 1,588 Almanacs, American 1,529 Church history 1,437 Fiction 1,287 Railroads 1,260 Economic conditions 1,247 Religious life 1,225 Clergy 1,209 Race relations 1,147 Ethnic groups 1,091 Women 1,086 Lutheran 1,081 Vital records 1,062 Germans 1,048 Foreign relations 1,033 Presidents 1,020 Study and teaching 1,015 less ...