History 621,809 Politics and government 394,274 Claims 240,668 Law and legislation 229,002 Bills, Private 223,928 Foreign relations 107,041 Government policy 64,051 Finance 63,744 Education 48,264 Appropriations and expenditures 47,013 Budget 45,148 Armed Forces 44,631 Economic conditions 43,416 Research 41,877 Taxation 41,662 African Americans 41,531 Social conditions 41,219 Diplomatic relations 40,579 International relations 40,391 Prevention 40,136 Expenditures, Public 38,260 Economic aspects 37,616 Officials and employees 37,316 Women 35,897 Presidents 35,877 Management 35,317 Slavery 33,980 Legal status, laws, etc 31,517 Periodicals 30,643 Study and teaching 30,223 Biography 29,934 Social aspects 29,874 States 29,375 Political science 28,365 Statistics 27,649 History and criticism 27,195 Evaluation 26,193 Medical care 26,075 World War, 1939-1945 25,724 Employment 25,657 Railroads 25,017 Description and travel 24,098 Race relations 23,924 Indians of North America 23,866 Social life and customs 23,421 Commerce 23,169 Civil rights 22,124 Popular music 22,034 Emigration and immigration 21,365 American 21,006 Jews 20,678 Employees 20,563 Economic policy 20,379 Histoire 20,266 Housing 19,968 Law 19,498 General 19,368 Relations 18,966 National security 18,946 Political aspects 18,632 Veterans 18,222 Environmental aspects 17,932 Services for 17,056 Congresses 17,000 Public lands 16,984 Tariff 16,683 Universities and colleges 16,332 Standards 16,177 Labor unions 16,133 Soldiers 15,986 Agriculture 15,964 Safety measures 15,851 Transportation 15,812 Older people 15,744 Foreign economic relations 15,475 Bibliography 15,416 Economic history 15,231 Governmental investigations 15,194 Salaries, etc 15,186 Small business 15,150 Rules and practice 14,869 Banks and banking 14,853 Travel 14,792 Civilization 14,627 Income tax 14,462 Administrative agencies 14,293 Terrorism 14,006 Wages 13,945 Religious aspects 13,681 World War, 1914-1918 13,388 Pollution 13,342 Planning 13,192 Regimental histories 13,091 Constitutional law 12,664 Public opinion 12,587 Architecture 12,572 Population 12,546 Campaigns 12,463 Military policy 12,294 Elections 12,090