History 4,145,999 Ver registros Politics and government 1,565,568 Ver registros Economic conditions 485,015 Ver registros Law and legislation 472,915 Ver registros Description and travel 410,168 Ver registros Social conditions 409,966 Ver registros Social life and customs 345,944 Ver registros History and criticism 328,412 Ver registros Foreign relations 322,128 Ver registros Antiquities 266,463 Ver registros Claims 247,880 Ver registros Political science 232,401 Ver registros Civilization 227,244 Ver registros Bills, Private 224,084 Ver registros Biography 222,775 Ver registros Education 220,798 Ver registros World War, 1939-1945 207,068 Ver registros Women 201,379 Ver registros Histoire 197,085 Ver registros Economic policy 194,720 Ver registros Economic history 190,271 Ver registros Jews 188,180 Ver registros Travel 176,808 Ver registros Periodicals 172,986 Ver registros Economic aspects 160,239 Ver registros Law 154,573 Ver registros Social aspects 150,292 Ver registros Finance 149,011 Ver registros Manners and customs 147,653 Ver registros Sources 141,676 Ver registros Agriculture 139,137 Ver registros Geology 137,413 Ver registros Government policy 135,119 Ver registros Study and teaching 133,305 Ver registros Church history 132,492 Ver registros Architecture 130,806 Ver registros Diplomatic relations 130,353 Ver registros Commerce 130,175 Ver registros Intellectual life 128,534 Ver registros International relations 122,125 Ver registros Music 119,934 Ver registros Art 115,756 Ver registros Statistics 111,847 Ver registros Taxation 110,641 Ver registros Congresses 102,037 Ver registros Research 100,694 Ver registros Criticism and interpretation 99,819 Ver registros Relations 99,100 Ver registros Buildings, structures, etc 98,402 Ver registros Legal status, laws, etc 95,449 Ver registros Religion 94,845 Ver registros Excavations (Archaeology) 91,346 Ver registros Bibliography 89,463 Ver registros Political aspects 87,281 Ver registros Indians of North America 84,741 Ver registros Armed Forces 82,360 Ver registros Religious aspects 81,452 Ver registros Management 81,012 Ver registros Emigration and immigration 80,540 Ver registros World War, 1914-1918 79,720 Ver registros Ethnic relations 79,186 Ver registros Population 78,670 Ver registros Constitutional law 78,437 Ver registros Industries 76,784 Ver registros Officials and employees 73,479 Ver registros City planning 71,354 Ver registros African Americans 71,043 Ver registros Railroads 70,899 Ver registros Theater 70,147 Ver registros Missions 69,940 Ver registros Political activity 69,561 Ver registros Popular music 69,392 Ver registros Communism 68,987 Ver registros Environmental aspects 67,336 Ver registros Appropriations and expenditures 67,086 Ver registros Prevention 66,656 Ver registros History, Military 66,253 Ver registros Folklore 65,553 Ver registros Exhibitions 63,846 Ver registros Campaigns 63,700 Ver registros Elections 63,480 Ver registros Housing 63,319 Ver registros Presidents 63,194 Ver registros Philosophy 62,834 Ver registros Budget 62,670 Ver registros Employment 62,558 Ver registros Kings and rulers 62,544 Ver registros Labor unions 62,128 Ver registros Colonies 61,980 Ver registros General 61,936 Ver registros Ethnology 61,446 Ver registros Motion pictures 60,670 Ver registros Families 59,991 Ver registros Civil rights 59,671 Ver registros Roads 59,000 Ver registros Finance, Public 58,950 Ver registros Banks and banking 58,209 Ver registros Slavery 57,953 Ver registros Historiography 57,016 Ver registros Working class 56,528 Ver registros