History Periodicals 314 Societies, etc 92 Genealogy 48 Jews 26 Sources 24 Histoire 21 more ... Politics and government 20 African Americans 19 Civilization 16 Emigration and immigration 13 Polish Americans 13 Railroads 12 Archives 11 Bibliography 11 Local history 11 Swedish Americans 11 Museums 10 Economic conditions 9 Périodiques 9 Registers of births, etc 9 Norwegians 8 Slovak Americans 8 Antiquities 7 German Americans 7 Germans 7 Norwegian Americans 7 Study and teaching 7 American literature 6 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 Slovaks 6 Biography 5 Canadiens français 5 less ...