Author
Infobase,
24
Tony Brown Productions
5
Educational Video Group (Firm)
4
Kenbow Communications (Firm)
4
California Newsreel (Firm)
3
Educational Video Group
2
Bill Moyers (Firm)
1
Kwanza (Firm)
1
Macmillan Films
1
NewsHour Productions
1
North Carolina State University
1
Public Broadcasting Service (U.S.)
1