History 4,146,320 Ver registros Politics and government 1,565,864 Ver registros Economic conditions 484,984 Ver registros Law and legislation 472,900 Ver registros Description and travel 410,543 Ver registros Social conditions 409,876 Ver registros Social life and customs 345,928 Ver registros History and criticism 328,376 Ver registros Foreign relations 322,165 Ver registros Antiquities 266,436 Ver registros Claims 247,885 Ver registros Political science 232,402 Ver registros Civilization 227,214 Ver registros Bills, Private 224,084 Ver registros Biography 222,780 Ver registros Education 220,826 Ver registros World War, 1939-1945 207,032 Ver registros Women 201,333 Ver registros Histoire 196,737 Ver registros Economic policy 194,716 Ver registros Economic history 190,316 Ver registros Jews 188,139 Ver registros Travel 177,146 Ver registros Periodicals 172,998 Ver registros Economic aspects 160,189 Ver registros Law 154,555 Ver registros Social aspects 150,223 Ver registros Finance 149,037 Ver registros Manners and customs 147,725 Ver registros Sources 141,968 Ver registros Agriculture 139,125 Ver registros Geology 137,426 Ver registros Government policy 135,096 Ver registros Study and teaching 133,290 Ver registros Church history 132,539 Ver registros Architecture 130,775 Ver registros Diplomatic relations 130,458 Ver registros Commerce 130,214 Ver registros Intellectual life 128,492 Ver registros International relations 122,148 Ver registros Music 119,939 Ver registros Art 115,793 Ver registros Statistics 111,845 Ver registros Taxation 110,643 Ver registros Congresses 102,026 Ver registros Research 100,684 Ver registros Criticism and interpretation 99,811 Ver registros Relations 99,074 Ver registros Buildings, structures, etc 98,385 Ver registros Legal status, laws, etc 95,429 Ver registros Religion 94,832 Ver registros Excavations (Archaeology) 91,323 Ver registros Bibliography 89,473 Ver registros Political aspects 87,242 Ver registros Indians of North America 84,796 Ver registros Armed Forces 82,360 Ver registros Religious aspects 81,484 Ver registros Management 81,000 Ver registros Emigration and immigration 80,541 Ver registros World War, 1914-1918 79,706 Ver registros Ethnic relations 79,170 Ver registros Population 78,659 Ver registros Constitutional law 78,446 Ver registros Industries 76,787 Ver registros Officials and employees 73,475 Ver registros City planning 71,338 Ver registros African Americans 71,029 Ver registros Railroads 70,917 Ver registros Theater 70,132 Ver registros Missions 69,977 Ver registros Political activity 69,534 Ver registros Popular music 69,380 Ver registros Communism 68,983 Ver registros Environmental aspects 67,326 Ver registros Appropriations and expenditures 67,097 Ver registros Prevention 66,643 Ver registros History, Military 66,238 Ver registros Folklore 65,546 Ver registros Exhibitions 63,821 Ver registros Campaigns 63,734 Ver registros Elections 63,478 Ver registros Housing 63,306 Ver registros Presidents 63,224 Ver registros Philosophy 62,806 Ver registros Budget 62,667 Ver registros Kings and rulers 62,552 Ver registros Employment 62,551 Ver registros Labor unions 62,121 Ver registros Colonies 62,022 Ver registros General 61,772 Ver registros Ethnology 61,432 Ver registros Motion pictures 60,650 Ver registros Families 59,977 Ver registros Civil rights 59,662 Ver registros Roads 59,002 Ver registros Finance, Public 58,967 Ver registros Banks and banking 58,219 Ver registros Slavery 57,990 Ver registros Historiography 56,995 Ver registros Working class 56,528 Ver registros