History Periodicals 311 Societies, etc 92 Genealogy 48 Jews 26 Sources 22 African Americans 19 more ... Politics and government 15 Railroads 12 Archives 11 Bibliography 11 Civilization 11 Local history 11 Polish Americans 11 Swedish Americans 11 Museums 10 Economic conditions 9 Registers of births, etc 9 Norwegians 8 Antiquities 7 Emigration and immigration 7 German Americans 7 Norwegian Americans 7 Study and teaching 7 Catalogs 6 Constitutional history 6 Historic buildings 6 Italian Americans 6 Manuscripts 6 Polish people 6 Presbyterians in the U.S.A. 6 Research 6 Slovak Americans 6 American literature 5 Biography 5 Description and travel 5 Histoire 5 Mennonites 5 Minorities 5 Patriotic societies 5 less ...