Library of Congress Congressional Research Service 2,881
Vance, Mary A 725
Gotham Book Mart Collection (University of Pennsylvania) 574
Library of Congress Legislative Reference Service 574
Harris Collection of American Poetry and Plays (Brown University) Reference Works 534
Library of Congress 520
Library of Congress Division of Bibliography 482
Horace Howard Furness Memorial Library (University of Pennsylvania) 481
White, Anthony G 370
Geological Survey (U.S.) 362
New York Public Library 317
Fiske Icelandic Collection 297
Gale Group 271
Harry Lyman Koopman Collection (Brown University) 258
Akademii︠a︡ nauk SSSR Biblioteka 250
Gosudarstvennai︠a︡ biblioteka SSSR imeni V.I. Lenina 230
Fraunhofer-Gesellschaft Informationszentrum Raum und Bau 217
McLellan Lincoln Collection (Brown University) 217
Harmon, Robert B (Robert Bartlett), 1932- 214
Great Britain Public Record Office 211
Gosudarstvennai︠a︡ publichnai︠a︡ biblioteka imeni M.E. Saltykova-Shchedrina 201
Bibliothèque nationale (France) 199
National Library of Medicine (U.S.) 199
Akademii͡a nauk SSSR Biblioteka 197
American Library Association 190
Edgar Fahs Smith Memorial Collection (University of Pennsylvania) 181
United States National Technical Information Service 174
National Criminal Justice Reference Service (U.S.) 169
David E. Pingree Collection (Brown University) 167
Institut nauchnoĭ informat︠s︡ii po obshchestvennym naukam (Akademii︠a︡ nauk SSSR) 167
Grolier Club 165
Harvard University Library 165
Unesco 165
United States National Archives and Records Service 163
United States Bureau of the Census 162
Doumato, Lamia 161
Gosudarstvennai͡a biblioteka SSSR imeni V.I. Lenina 161
Library of Congress Science and Technology Division. Reference Section 158
Nichigai Asoshiētsu 158
Coppa & Avery Consultants 155
Casper, Dale E 151
Centre national de la recherche scientifique (France) 143
Kokuritsu Kokkai Toshokan (Japan) 143
National Agricultural Library (U.S.) 143
Ray Nash Book Collection 143
Vsesoi︠u︡znai︠a︡ gosudarstvennai︠a︡ biblioteka inostrannoĭ literatury (Soviet Union) 143
Council of Planning Librarians 140
Goehlert, Robert, 1948- 140
British Museum Department of Printed Books 139
Gosudarstvennai͡a publichnai͡a biblioteka imeni M.E. Saltykova-Shchedrina 139
Rollo Silver Collection (Brown University) Duplicates not retained 139
Archivo General de la Nación (Mexico) 137
Cable, Carole 136
British Library 132
Griffin, Appleton P. C (Appleton Prentiss Clark), 1852-1926 130
Kumar, Lisa 128
Archives nationales (France) 127
National Archives (U.S.) 127
Nordquist, Joan 126
Vsesoi︠u︡znai︠a︡ gosudarstvennai︠a︡ biblioteka inostrannoĭ literatury (Soviet Union) 123
Bibliothèque nationale (France) 121
Library of Congress General Reference and Bibliography Division 121
Biblioteca Nacional (Spain) 117
Guo li zhong yang tu shu guan (China) 116
McMurtrie, Douglas C (Douglas Crawford), 1888-1944 116
Institut nauchnoĭ informat︠s︡ii po obshchestvennym naukam (Akademii︠a︡ nauk SSSR) 114
Rosengarten Family Fund 114
Library of Congress Manuscript Division 113
Anne S.K. Brown Military Collection 111
Bodleian Library 109
Gosudarstvennai︠a︡ publichnai︠a︡ istoricheskai︠a︡ biblioteka RSFSR 108
Boston Public Library 107
Biblioteca Nacional (Brazil) 106
Maggs Bros 105
Nichigai Asoshiētsu 104
Archivo General de la Nación (Mexico) 103
Beijing tu shu guan 103
Shakespeare, William, 1564-1616 103
United States National Bureau of Standards 103
Culture Class Collection (University of Pennsylvania) 102
Aspen Systems Corporation 101
Harris Collection of American Poetry and Plays (Brown University) Poetry, 1901-1925 101
United States Office of Education 100
Huls, Mary Ellen 98
National Institute of Law Enforcement and Criminal Justice 98
National Library of Australia 97
Bibliographical Society (Great Britain) 96
Davis, Lenwood G 95
Harris Collection of American Poetry and Plays (Brown University) Poetry, 1609-1875 94
Gosudarstvennai͡a publichnai͡a istoricheskai͡a biblioteka RSFSR 92
De Gruyter 91
Centre national de la recherche scientifique (France) Centre de documentation 89
Newberry Library 89
United States Bureau of Labor Statistics 89
Bibliographical Society of America 88
Cornell University Libraries 88
National Institute of Justice (U.S.) 88
New York State Library 87
Kravitz, Marjorie 86
National Institute of Mental Health (U.S.) 86