Z - Library Science 38,491 D - World History 6,119 P - Language and Literature 4,892 C - Historical Sciences 3,239 H - Social Science 3,174 K - Law 2,588 M - Music 2,177 B - Philosophy, Psychology, Religion 1,657 F - General American History 1,406 Q - Science 1,212 N - Fine Arts 1,074 G - Geography, Anthropology, Recreation 976 E - United States History 859 L - Education 715 J - Political Science 626 R - Medicine 543 A - General Works 502 T - Technology 395 S - Agriculture 342 U - Military Science 148 V - Naval Science 27 see all ...

Gotham Book Mart Collection (University of Pennsylvania) 411 Library of Congress 293 Nichigai Asoshiētsu 227 Horace Howard Furness Memorial Library (University of Pennsylvania) 221 Harris Collection of American Poetry and Plays (Brown University) Reference Works 194 American Association of Law Libraries Government Documents SIS 187 United States National Archives and Records Service 179 Nichigai Asoshiētsu 157 Library of Congress Division of Bibliography 148 National Archives (U.S.) 143 Jean-François Vilain and Roger S. Wieck Collection of Private Presses, Ephemera, & Related References (University of Pennsylvania) 140 Harris Collection of American Poetry and Plays (Brown University) Poetry, 1951-1975 138 Alumni and Friends Memorial Book Fund 137 Rosengarten Family Fund 136 Ray Nash Book Collection 111 Great Britain Public Record Office 108 McMurtrie, Douglas C (Douglas Crawford), 1888-1944 108 Henry Charles Lea Library (University of Pennsylvania) 104 Culture Class Collection (University of Pennsylvania) 103 Rollo Silver Collection (Brown University) Duplicates not retained 97 United States National Archives and Records Administration 97 New York Public Library 96 Fraunhofer-Gesellschaft Informationszentrum Raum und Bau 94 David E. Pingree Collection (Brown University) 93 Archives nationales (France) 91 Grolier Club 86 Geological Survey (U.S.) 85 American Association of Law Libraries Meeting 83 British Library 82 Library of Congress Law Library 82 see all ...

English 40,744 German 6,643 French 6,096 Spanish 4,300 Russian 3,636 Chinese 3,435 Italian 3,266 Japanese 2,138 Arabic 1,082 Polish 931 Portuguese 916 Latin 807 Dutch 784 Ukrainian 595 Korean 586 Turkish 501 Czech 472 Hebrew 470 Persian 401 Multiple 389 Swedish 295 Hungarian 261 Greek 260 Danish 205 Bulgarian 192 Croatian 175 Slovak 158 Catalan 148 Romanian 140 Lithuanian 133 see all ...

20th century 3,488 1900-1999 2,009 19th century 1,567 18th century 1,096 16th century 1,063 17th century 818 1900 - 1999 688 1800-1899 647 1500-1599 569 1700-1799 440 Early works to 1800 368 1939-1945 337 1945- 312 To 1500 257 Early modern, 1500-1700 255 1800 - 1899 250 1800-1999 249 1600-1699 245 20e siècle 237 21st century 211 1500 - 1599 184 Colonial period, ca. 1600-1775 180 Geschichte 171 Since 1945 170 Civil War, 1861-1865 161 1700 - 1799 159 Revolution, 1789-1799 159 1500-1700 142 Revolution, 1775-1783 142 1500-1699 129 see all ...