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