For Peter, learning to whistle means being able to call his dog, Willie, and being a bit closer to those two magic words: grown-up.
Unfortunately the movie Whistle for Willie is not yet available on HBO Max.
| Visual Effects | Ezra Jack Keats | Animation |
| Sound | Barry Galbraith | Music |
| Visual Effects | Mal Whittman | Animation |
| Directing | Mal Whittman | Director |
| Writing | Ezra Jack Keats | Author |
| Production | Morton Schindel | Producer |
