Carabimero
Senior HTF Member
I don't know why it's not on that list, but it was officially rated "G" in 1979:
It was a significantly different cut, which usually means resubmitting. However, I think the original version probably would have gotten a PG if it had come out just a few years later. As Stephen mentioned above, the "G" rating was actually a little more permissive in the 70s.
Have a copy of that, and I've been meaning to read it. Is it true that Robert Wise hand-carried the final reel to the premiere?
I heard that when the film was being premiered at Mann's Chinese, reel two was playing and reel four was on its way to the theater.