History Societies, etc 75 Periodicals 61 Genealogy 37 Jews 22 African Americans 13 Patriotic societies 13 more ... Politics and government 11 Antiquities 10 Economic conditions 10 Histoire 10 Polish Americans 10 Railroads 10 Sources 10 Ethnic relations 9 Civilization 8 Oral history 8 Registers of births, etc 8 Local history 7 American literature 6 Museums 6 Polish people 6 Presbyterians in the U.S.A. 6 Biography 5 Germans 5 Historic buildings 5 Huguenots 5 Political activity 5 Slavery 5 Study and teaching 5 Archives 4 Dutch Americans 4 Emigration and immigration 4 Historiography 4 Mennonites 4 Naval art and science 4 Printing 4 Publishing 4 Slovaks 4 American Revolution Bicentennial, 1976 3 less ...