Main contributor
- Indiana University, Bloomington. Audio-Visual Center46
- Kathryn Hellerstein46
- Maren Mansberger Feil46
- Betsy Feil45
- Daniel Hellerstein45
- Jonathan Hellerstein45
- Ellen Feil44
- National Educational Television44
- Susan Hellerstein44
- Amy Feil43
- Leslie Feil43
- Beth Hellerstein41
- Dapena, Jesus41
- Ford40
- Agency For Instructional Television39
- Agency for Instructional Television34
- Encyclopaedia Britannica Films Inc.33
- George H. Feil27
- Julius Weil25
- Feil, Ed24