History 4,145,517 Ver registros Politics and government 1,565,514 Ver registros Economic conditions 484,919 Ver registros Law and legislation 472,417 Ver registros Description and travel 410,488 Ver registros Social conditions 409,788 Ver registros Social life and customs 345,854 Ver registros History and criticism 328,462 Ver registros Foreign relations 322,039 Ver registros Antiquities 266,368 Ver registros Claims 247,885 Ver registros Political science 232,383 Ver registros Civilization 227,171 Ver registros Bills, Private 224,084 Ver registros Biography 222,749 Ver registros Education 220,862 Ver registros World War, 1939-1945 206,983 Ver registros Women 201,288 Ver registros Histoire 196,117 Ver registros Economic policy 194,699 Ver registros Economic history 190,389 Ver registros Jews 188,093 Ver registros Travel 177,179 Ver registros Periodicals 172,998 Ver registros Economic aspects 160,142 Ver registros Law 154,402 Ver registros Social aspects 150,166 Ver registros Finance 149,012 Ver registros Manners and customs 147,705 Ver registros Sources 141,937 Ver registros Agriculture 139,092 Ver registros Geology 137,418 Ver registros Government policy 135,011 Ver registros Study and teaching 133,246 Ver registros Church history 132,526 Ver registros Architecture 130,744 Ver registros Diplomatic relations 130,520 Ver registros Commerce 130,192 Ver registros Intellectual life 128,469 Ver registros International relations 122,152 Ver registros Music 119,912 Ver registros Art 115,812 Ver registros Statistics 111,841 Ver registros Taxation 110,580 Ver registros Congresses 102,034 Ver registros Research 100,657 Ver registros Criticism and interpretation 99,835 Ver registros Relations 99,051 Ver registros Buildings, structures, etc 98,360 Ver registros Legal status, laws, etc 95,350 Ver registros Religion 94,819 Ver registros Excavations (Archaeology) 91,278 Ver registros Bibliography 89,468 Ver registros Political aspects 87,217 Ver registros Indians of North America 84,782 Ver registros Armed Forces 82,337 Ver registros Religious aspects 81,457 Ver registros Management 80,987 Ver registros Emigration and immigration 80,523 Ver registros World War, 1914-1918 79,686 Ver registros Ethnic relations 79,155 Ver registros Population 78,654 Ver registros Constitutional law 78,149 Ver registros Industries 76,784 Ver registros Officials and employees 73,462 Ver registros City planning 71,322 Ver registros African Americans 70,990 Ver registros Railroads 70,896 Ver registros Theater 70,114 Ver registros Missions 69,966 Ver registros Political activity 69,525 Ver registros Popular music 69,365 Ver registros Communism 68,979 Ver registros Environmental aspects 67,320 Ver registros Appropriations and expenditures 67,097 Ver registros Prevention 66,602 Ver registros History, Military 66,225 Ver registros Folklore 65,540 Ver registros Campaigns 63,721 Ver registros Exhibitions 63,718 Ver registros Elections 63,437 Ver registros Housing 63,298 Ver registros Presidents 63,192 Ver registros Philosophy 62,792 Ver registros Budget 62,663 Ver registros Kings and rulers 62,533 Ver registros Employment 62,529 Ver registros Labor unions 62,109 Ver registros Colonies 62,006 Ver registros General 61,769 Ver registros Ethnology 61,414 Ver registros Motion pictures 60,630 Ver registros Families 59,963 Ver registros Civil rights 59,610 Ver registros Roads 58,999 Ver registros Finance, Public 58,956 Ver registros Banks and banking 58,198 Ver registros Slavery 57,982 Ver registros Historiography 56,984 Ver registros Working class 56,517 Ver registros