Author
Educational Resources Information Center (U.S.)
2,318
Library of Congress
1,304
Early English Books Online
1,259
Library of Congress. Congressional Research Service
1,243
American Library Association
944
Gotham Book Mart Collection (University of Pennsylvania)
763
ProQuest Ebook Subscriptions
667
ProQuest (Firm)
600
e-libro, Corp
570
Jean-François Vilain and Roger S. Wieck Collection of Private Presses, Ephemera, & Related References (University of Pennsylvania)
518
Horace Howard Furness Memorial Library (University of Pennsylvania)
478
United States. Superintendent of Documents
416
McMurtrie, Douglas C. (Douglas Crawford), 1888-1944
414
Safari Books Online
376
New York Public Library
348
Library of Congress. Manuscript Division
339
Library of Congress. Subject Cataloging Division
338
National Center for Education Statistics
334
Nichigai Asoshiētsu
334
National Agricultural Library (U.S.)
311
Association of Research Libraries. Systems and Procedures Exchange Center
310
Unesco
308
Library of Congress. Division of Bibliography
303
Culture Class Collection (University of Pennsylvania)
292
Rosengarten Family Fund
292
American Association of Law Libraries
280
National Library of Medicine (U.S.)
266
Library Association
265
Alumni and Friends Memorial Book Fund
260
Henry Charles Lea Library (University of Pennsylvania)
234
Library of Congress. Cataloging Policy and Support Office
234
Association of Research Libraries
223
Grolier Club
222
British Library
219
United States. Office of Educational Research and Improvement
215
United States. Government Printing Office
213
Jean-François Vilain and Roger S. Wieck Collection of Private Presses, Ephemera, & Related References (University of Pennsylvania)
212
Kehoe, Patrick E.
206
Library of Congress. General Reference and Bibliography Division
194
Biblioteca apostolica vaticana
185
Doyle, Charles
183
United States. National Commission on Libraries and Information Science
183
H.W. Wilson Company
182
Harvard College (1636-1780)
179
Bibliothèque nationale (France)
176
International Federation of Library Associations and Institutions
173
Maggs Bros
173
Library of Congress. Network Development and MARC Standards Office
171
Special Libraries Association
170
Akademii︠a︡ nauk SSSR. Biblioteka
167
more ...