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