History 299 Sources 207 Bibliography 66 Manuscripts 50 Archives 41 Politics and government 24 Manuscripts, American 19 more ... Catalogs 14 Jews 12 Emigration and immigration 10 Women 10 Archival resources 9 Histoire 9 Immigrants 9 Presidents 9 African Americans 8 Historiography 8 Genealogy 7 Minorities 7 Periodicals 7 Social conditions 7 Church history 6 Ethnic relations 6 Railroads 6 Civil rights 5 Government relations 5 Indians of North America 5 Slavery 5 Union catalogs 5 Antislavery movements 4 Church records and registers 4 Civilization 4 Commerce 4 Foreign relations 4 History, Local 4 Libraries 4 Microforms 4 Publishing 4 Ships 4 Bibliographie 3 less ...