If animator Bob Clampett and Edgar Rice Burroughs nephew John Coleman Burroughs had had their way, we would have seen a full-length John Carter of Mars animated feature nearly 4 years before the Fleischer Superman shorts and almost 2 years before Disney would premiere Snow White as the first full-length animated feature.
Alas, it wasn't to be. Fortunately we do have the work done to pitch the idea. And it is amazing.
Next year we evidently get a big screen adaptation brought to life by the same people that brought you the absolutely wonderful Wall-E. It better be good.