History 25,139 Politics and government 8,819 Indians of North America 6,628 Description and travel 5,915 Histoire 5,648 Law and legislation 5,372 Economic conditions 4,897 Periodicals 4,394 Social conditions 3,809 Statistics 3,586 Foreign relations 3,196 Emigration and immigration 2,997 Government policy 2,969 Commerce 2,957 Women 2,615 Travel 2,570 General 2,414 Biography 2,237 Finance 2,202 Social life and customs 2,200 Economic policy 2,193 Education 2,179 Legal status, laws, etc 2,100 Congresses 2,073 Social aspects 2,051 Economic aspects 2,039 Bibliography 2,017 World War, 1939-1945 1,978 History and criticism 1,969 Political science 1,714 Research 1,686 Jews 1,659 International relations 1,656 Geology 1,602 Government relations 1,602 Indigenous peoples 1,602 Economic history 1,569 Directories 1,560 Law 1,554 Taxation 1,531 Politique et gouvernement 1,520 Railroads 1,501 Federal government 1,476 Study and teaching 1,440 HISTORY 1,427 Labor unions 1,363 Droit 1,356 Agriculture 1,352 Population 1,348 Relations 1,335 Discovery and exploration 1,288 Constitutional law 1,283 Immigrants 1,275 Missions 1,268 Canadian literature 1,256 Employment 1,246 Diplomatic relations 1,187 Free trade 1,179 Environmental aspects 1,152 World War, 1914-1918 1,124 Civil rights 1,099 Foreign economic relations 1,081 Boundaries 1,070 POLITICAL SCIENCE 1,057 Sources 1,045 Conditions sociales 1,030 Banks and banking 997 Civilization 996 Politique gouvernementale 993 French-Canadians 970 Colonies 965 Industries 938 Prices 933 Labor supply 899 Political aspects 890 SOCIAL SCIENCE 877 Appropriations and expenditures 869 Inuit 834 Finance, Public 821 Wages 814 Nationalism 813 Ethnic relations 811 Income tax 799 Universities and colleges 798 Employees 795 Families 787 Armed Forces 786 Music 785 French language 782 Manners and customs 777 Constitutional history 766 Management 764 Mines and mineral resources 759 Native peoples 753 Medical care 750 Race relations 736 Maps 732 Fur trade 731 Ukrainians 730 Environmental policy 717