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- Geological Survey (U.S.)23,016
- Infobase, film distributor21,982
- Films for the Humanities & Sciences (Firm)10,889
- Infobase10,731
- Inter-university Consortium for Political and Social Research10,474
- Library of Congress. Congressional Research Service, issuing body8,846
- McGraw-Hill Education LLC. publisher7,793
- Kanopy (Firm)6,708
- Datamonitor (Firm)4,869
- Adam Matthew Digital (Firm), digitiser3,764
- Universal Newsreel3,307
- Bloomberg News (Firm)3,150
- CBS News, production company2,905
- United States. Bureau of the Census2,759
- HistoryMakers (Video oral history collection), production company2,692
- CBS News2,513
- Electronic Enlightenment Project, issuing body2,481
- CBS Inc., production company2,403
- Institute of Electrical and Electronics Engineers2,064
- Warner Home Video (Firm)2,009