History 4,143,111 Breathnaigh ar na taifid Politics and government 1,564,962 Breathnaigh ar na taifid Economic conditions 484,708 Breathnaigh ar na taifid Law and legislation 472,333 Breathnaigh ar na taifid Description and travel 410,295 Breathnaigh ar na taifid Social conditions 409,608 Breathnaigh ar na taifid Social life and customs 345,707 Breathnaigh ar na taifid History and criticism 327,969 Breathnaigh ar na taifid Foreign relations 321,778 Breathnaigh ar na taifid Antiquities 266,219 Breathnaigh ar na taifid Claims 247,884 Breathnaigh ar na taifid Political science 232,362 Breathnaigh ar na taifid Civilization 227,058 Breathnaigh ar na taifid Bills, Private 224,084 Breathnaigh ar na taifid Biography 222,785 Breathnaigh ar na taifid Education 220,572 Breathnaigh ar na taifid World War, 1939-1945 206,893 Breathnaigh ar na taifid Women 201,187 Breathnaigh ar na taifid Economic policy 194,444 Breathnaigh ar na taifid Histoire 194,319 Breathnaigh ar na taifid Economic history 190,092 Breathnaigh ar na taifid Jews 188,031 Breathnaigh ar na taifid Travel 176,423 Breathnaigh ar na taifid Periodicals 172,994 Breathnaigh ar na taifid Economic aspects 160,099 Breathnaigh ar na taifid Law 154,261 Breathnaigh ar na taifid Social aspects 150,091 Breathnaigh ar na taifid Finance 148,931 Breathnaigh ar na taifid Manners and customs 147,424 Breathnaigh ar na taifid Sources 141,301 Breathnaigh ar na taifid Agriculture 138,941 Breathnaigh ar na taifid Geology 137,404 Breathnaigh ar na taifid Government policy 134,966 Breathnaigh ar na taifid Study and teaching 133,186 Breathnaigh ar na taifid Church history 132,504 Breathnaigh ar na taifid Architecture 130,682 Breathnaigh ar na taifid Diplomatic relations 130,193 Breathnaigh ar na taifid Commerce 130,131 Breathnaigh ar na taifid Intellectual life 128,435 Breathnaigh ar na taifid International relations 121,256 Breathnaigh ar na taifid Music 119,847 Breathnaigh ar na taifid Art 115,721 Breathnaigh ar na taifid Statistics 111,847 Breathnaigh ar na taifid Taxation 110,553 Breathnaigh ar na taifid Congresses 102,035 Breathnaigh ar na taifid Research 100,641 Breathnaigh ar na taifid Criticism and interpretation 99,702 Breathnaigh ar na taifid Relations 99,001 Breathnaigh ar na taifid Buildings, structures, etc 98,331 Breathnaigh ar na taifid Legal status, laws, etc 95,321 Breathnaigh ar na taifid Religion 94,682 Breathnaigh ar na taifid Excavations (Archaeology) 91,203 Breathnaigh ar na taifid Bibliography 89,435 Breathnaigh ar na taifid Political aspects 87,170 Breathnaigh ar na taifid Indians of North America 84,759 Breathnaigh ar na taifid Armed Forces 82,316 Breathnaigh ar na taifid Religious aspects 81,422 Breathnaigh ar na taifid Management 80,966 Breathnaigh ar na taifid Emigration and immigration 80,454 Breathnaigh ar na taifid World War, 1914-1918 79,680 Breathnaigh ar na taifid Ethnic relations 79,133 Breathnaigh ar na taifid Population 78,546 Breathnaigh ar na taifid Constitutional law 78,129 Breathnaigh ar na taifid Industries 76,758 Breathnaigh ar na taifid Officials and employees 73,440 Breathnaigh ar na taifid City planning 71,298 Breathnaigh ar na taifid African Americans 70,971 Breathnaigh ar na taifid Railroads 70,886 Breathnaigh ar na taifid Theater 70,079 Breathnaigh ar na taifid Missions 69,940 Breathnaigh ar na taifid Political activity 69,479 Breathnaigh ar na taifid Popular music 69,356 Breathnaigh ar na taifid Communism 68,765 Breathnaigh ar na taifid Environmental aspects 67,303 Breathnaigh ar na taifid Appropriations and expenditures 67,090 Breathnaigh ar na taifid Prevention 66,594 Breathnaigh ar na taifid History, Military 66,196 Breathnaigh ar na taifid Folklore 65,502 Breathnaigh ar na taifid Exhibitions 63,744 Breathnaigh ar na taifid Campaigns 63,708 Breathnaigh ar na taifid Elections 63,425 Breathnaigh ar na taifid Housing 63,281 Breathnaigh ar na taifid Presidents 63,171 Breathnaigh ar na taifid Philosophy 62,726 Breathnaigh ar na taifid Budget 62,659 Breathnaigh ar na taifid Kings and rulers 62,513 Breathnaigh ar na taifid Employment 62,507 Breathnaigh ar na taifid Labor unions 62,095 Breathnaigh ar na taifid Colonies 61,979 Breathnaigh ar na taifid General 61,691 Breathnaigh ar na taifid Ethnology 61,384 Breathnaigh ar na taifid Motion pictures 60,605 Breathnaigh ar na taifid Families 59,934 Breathnaigh ar na taifid Civil rights 59,592 Breathnaigh ar na taifid Roads 58,987 Breathnaigh ar na taifid Finance, Public 58,931 Breathnaigh ar na taifid Banks and banking 58,180 Breathnaigh ar na taifid Slavery 57,972 Breathnaigh ar na taifid Historiography 56,937 Breathnaigh ar na taifid Working class 56,508 Breathnaigh ar na taifid