Author
Educational Resources Information Center (U.S.)
2,315
Library of Congress
1,302
Early English Books Online
1,259
Library of Congress. Congressional Research Service
1,242
American Library Association
941
Gotham Book Mart Collection (University of Pennsylvania)
790
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)
517
Horace Howard Furness Memorial Library (University of Pennsylvania)
497
McMurtrie, Douglas C. (Douglas Crawford), 1888-1944
412
United States. Superintendent of Documents
407
Safari Books Online
376
New York Public Library
348
Library of Congress. Subject Cataloging Division
337
Nichigai Asoshiētsu
334
Library of Congress. Manuscript Division
330
National Center for Education Statistics
330
Unesco
306
Association of Research Libraries. Systems and Procedures Exchange Center
304
Library of Congress. Division of Bibliography
301
National Agricultural Library (U.S.)
297
Culture Class Collection (University of Pennsylvania)
296
Rosengarten Family Fund
292
American Association of Law Libraries
278
Library Association
265
National Library of Medicine (U.S.)
262
Alumni and Friends Memorial Book Fund
261
Henry Charles Lea Library (University of Pennsylvania)
234
Library of Congress. Cataloging Policy and Support Office
232
Association of Research Libraries
224
Grolier Club
222
British Library
220
Jean-François Vilain and Roger S. Wieck Collection of Private Presses, Ephemera, & Related References (University of Pennsylvania)
212
United States. Office of Educational Research and Improvement
212
United States. Government Printing Office
210
Kehoe, Patrick E.
206
Library of Congress. General Reference and Bibliography Division
192
Biblioteca apostolica vaticana
185
Doyle, Charles
183
H.W. Wilson Company
180
Harvard College (1636-1780)
179
United States. National Commission on Libraries and Information Science
179
Bibliothèque nationale (France)
176
International Federation of Library Associations and Institutions
173
Maggs Bros
172
Library of Congress. Network Development and MARC Standards Office
170
Special Libraries Association
170
Akademii︠a︡ nauk SSSR. Biblioteka
167
more ...