History 35,978 Politics and government 5,931 African Americans 4,696 Description and travel 4,123 Genealogy 3,920 Church records and registers 3,799 Sources 3,012 more ... Biography 2,955 Periodicals 2,906 Jews 2,684 Societies, etc 2,668 Indians of North America 2,627 Census records 2,579 Deeds 2,533 Slavery 2,436 Social life and customs 2,357 Streets 2,220 Social conditions 2,097 Registers of births, etc 2,096 Emigration and immigration 1,849 Education 1,721 Bibliography 1,670 Histoire 1,603 Probate records 1,590 Churches 1,540 Almanacs, American 1,533 Church history 1,419 Railroads 1,266 Economic conditions 1,265 Race relations 1,216 Clergy 1,142 Families 1,130 Women 1,098 Vital records 1,067 Lutheran 1,044 Foreign relations 1,031 Study and teaching 1,031 Presidents 1,018 Religious life 1,012 Marriage records 1,010 less ...