History 4,140,145 Breathnaigh ar na taifid Politics and government 1,564,251 Breathnaigh ar na taifid Economic conditions 484,400 Breathnaigh ar na taifid Law and legislation 471,980 Breathnaigh ar na taifid Description and travel 410,072 Breathnaigh ar na taifid Social conditions 409,232 Breathnaigh ar na taifid Social life and customs 345,370 Breathnaigh ar na taifid History and criticism 327,537 Breathnaigh ar na taifid Foreign relations 321,535 Breathnaigh ar na taifid Antiquities 266,015 Breathnaigh ar na taifid Claims 247,877 Breathnaigh ar na taifid Political science 232,334 Breathnaigh ar na taifid Civilization 226,897 Breathnaigh ar na taifid Bills, Private 224,084 Breathnaigh ar na taifid Biography 222,717 Breathnaigh ar na taifid Education 220,449 Breathnaigh ar na taifid World War, 1939-1945 206,742 Breathnaigh ar na taifid Women 201,015 Breathnaigh ar na taifid Economic policy 194,312 Breathnaigh ar na taifid Histoire 190,738 Breathnaigh ar na taifid Economic history 189,872 Breathnaigh ar na taifid Jews 187,890 Breathnaigh ar na taifid Travel 176,155 Breathnaigh ar na taifid Periodicals 172,978 Breathnaigh ar na taifid Economic aspects 159,990 Breathnaigh ar na taifid Law 154,172 Breathnaigh ar na taifid Social aspects 149,891 Breathnaigh ar na taifid Finance 148,870 Breathnaigh ar na taifid Manners and customs 147,111 Breathnaigh ar na taifid Sources 141,250 Breathnaigh ar na taifid Agriculture 138,877 Breathnaigh ar na taifid Geology 137,394 Breathnaigh ar na taifid Government policy 134,855 Breathnaigh ar na taifid Study and teaching 133,075 Breathnaigh ar na taifid Church history 132,428 Breathnaigh ar na taifid Architecture 130,557 Breathnaigh ar na taifid Commerce 130,029 Breathnaigh ar na taifid Diplomatic relations 129,983 Breathnaigh ar na taifid Intellectual life 128,321 Breathnaigh ar na taifid International relations 121,146 Breathnaigh ar na taifid Music 119,787 Breathnaigh ar na taifid Art 115,557 Breathnaigh ar na taifid Statistics 111,842 Breathnaigh ar na taifid Taxation 110,495 Breathnaigh ar na taifid Congresses 102,018 Breathnaigh ar na taifid Research 100,579 Breathnaigh ar na taifid Criticism and interpretation 99,474 Breathnaigh ar na taifid Relations 98,913 Breathnaigh ar na taifid Buildings, structures, etc 98,235 Breathnaigh ar na taifid Legal status, laws, etc 95,238 Breathnaigh ar na taifid Religion 94,585 Breathnaigh ar na taifid Excavations (Archaeology) 91,116 Breathnaigh ar na taifid Bibliography 89,428 Breathnaigh ar na taifid Political aspects 87,028 Breathnaigh ar na taifid Indians of North America 84,713 Breathnaigh ar na taifid Armed Forces 82,259 Breathnaigh ar na taifid Religious aspects 81,315 Breathnaigh ar na taifid Management 80,914 Breathnaigh ar na taifid Emigration and immigration 80,370 Breathnaigh ar na taifid World War, 1914-1918 79,622 Breathnaigh ar na taifid Ethnic relations 79,077 Breathnaigh ar na taifid Population 78,525 Breathnaigh ar na taifid Constitutional law 78,091 Breathnaigh ar na taifid Industries 76,736 Breathnaigh ar na taifid Officials and employees 73,402 Breathnaigh ar na taifid City planning 71,247 Breathnaigh ar na taifid African Americans 70,881 Breathnaigh ar na taifid Railroads 70,874 Breathnaigh ar na taifid Theater 70,027 Breathnaigh ar na taifid Missions 69,917 Breathnaigh ar na taifid Political activity 69,429 Breathnaigh ar na taifid Popular music 69,302 Breathnaigh ar na taifid Communism 68,731 Breathnaigh ar na taifid Environmental aspects 67,272 Breathnaigh ar na taifid Appropriations and expenditures 67,072 Breathnaigh ar na taifid Prevention 66,539 Breathnaigh ar na taifid History, Military 66,144 Breathnaigh ar na taifid Folklore 65,454 Breathnaigh ar na taifid Exhibitions 63,732 Breathnaigh ar na taifid Campaigns 63,662 Breathnaigh ar na taifid Elections 63,397 Breathnaigh ar na taifid Housing 63,259 Breathnaigh ar na taifid Presidents 63,129 Breathnaigh ar na taifid Philosophy 62,653 Breathnaigh ar na taifid Budget 62,645 Breathnaigh ar na taifid Employment 62,481 Breathnaigh ar na taifid Kings and rulers 62,450 Breathnaigh ar na taifid Labor unions 62,076 Breathnaigh ar na taifid Colonies 61,935 Breathnaigh ar na taifid General 61,623 Breathnaigh ar na taifid Ethnology 61,357 Breathnaigh ar na taifid Motion pictures 60,475 Breathnaigh ar na taifid Families 59,819 Breathnaigh ar na taifid Civil rights 59,544 Breathnaigh ar na taifid Roads 58,976 Breathnaigh ar na taifid Finance, Public 58,904 Breathnaigh ar na taifid Banks and banking 58,162 Breathnaigh ar na taifid Slavery 57,952 Breathnaigh ar na taifid Historiography 56,885 Breathnaigh ar na taifid Working class 56,490 Breathnaigh ar na taifid