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Library of Congress Congressional Research Service 438 Library of Congress 321 Geological Survey (U.S.) 292 Harris Collection of American Poetry and Plays (Brown University) Reference Works 223 Library of Congress Division of Bibliography 223 Gotham Book Mart Collection (University of Pennsylvania) 219 Great Britain Public Record Office 197 Vance, Mary A 195 Fiske Icelandic Collection 191 White, Anthony G 185 Horace Howard Furness Memorial Library (University of Pennsylvania) 173 Harmon, Robert B (Robert Bartlett), 1932- 143 National Criminal Justice Reference Service (U.S.) 138 United States National Archives and Records Service 135 Archivo General de la Nación (Mexico) 131 Gosudarstvennai︠a︡ publichnai︠a︡ biblioteka imeni M.E. Saltykova-Shchedrina 126 Gosudarstvennai︠a︡ biblioteka SSSR imeni V.I. Lenina 121 Archives nationales (France) 119 United States Bureau of the Census 118 Institut nauchnoĭ informat︠s︡ii po obshchestvennym naukam (Akademii︠a︡ nauk SSSR) 111 New York Public Library 109 National Archives (U.S.) 108 Akademii︠a︡ nauk SSSR Biblioteka 107 British Library 103 McMurtrie, Douglas C (Douglas Crawford), 1888-1944 103 Fraunhofer-Gesellschaft Informationszentrum Raum und Bau 102 Archivo General de la Nación (Mexico) 98 Library of Congress Legislative Reference Service 97 David E. Pingree Collection (Brown University) 96 Gosudarstvennai͡a publichnai͡a biblioteka imeni M.E. Saltykova-Shchedrina 95 see all ...

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Bibliography 63,708 Bibliographies 35,146 Catalogs 17,257 History 13,832 Periodicals 5,827 Imprints 2,414 bibliographies 2,155 Biography 1,964 Sources 1,928 Criticism, interpretation, etc 1,654 Indexes 1,352 Union lists 1,335 Biographies 1,323 Union catalogs 1,304 Bibliographie 1,132 Directories 1,032 Exhibitions 1,009 Bio-bibliography 861 Exhibition catalogs 835 Catalogues 763 Bibliography of bibliographies 713 Local history 687 Abstracts 646 Union lists (Library catalogs) 618 catalogs (documents) 562 Maps 474 Congresses 452 Church history 438 Microform catalogs 427 Early works to 1800 422 see all ...

20th century 2,516 19th century 1,227 1900-1999 1,077 18th century 956 1900 - 1999 797 16th century 708 17th century 576 1945- 402 1800-1899 392 1700-1799 342 1500-1599 290 Revolution, 1789-1799 264 1800 - 1899 260 1939-1945 234 Since 1945 216 Early modern, 1500-1700 214 1700 - 1799 189 Civil War, 1861-1865 185 Early works to 1800 178 Revolution, 1775-1783 172 Colonial period, ca. 1600-1775 161 1600-1699 155 1564-1616 145 1500 - 1599 136 To 1500 133 1939 - 1945 130 1800-1999 124 1933-1945 118 1500 - 1700 113 Revolution, 1917-1921 110 see all ...