History 52 Politics and government 20 Public welfare 13 Local government 12 Economic conditions 9 Foreign relations 8 Trade-unions 8 Local finance 6 Social conditions 6 Social service 6 Social policy 5 World War, 1914-1918 5 Addresses, essays, lectures 4 Finance 4 Governmental investigations 4 History, Military 4 Industrial relations 4 Social aspects 4 Women 4 Coal mines and mining 3 Economic policy 3 Housing 3 Leisure 3 Moving-pictures 3 Political activity 3 Political parties 3 Research 3 Social sciences 3 Taxation 3 Appropriations and expenditures 2