I'd heard of these Max Fleischer Superman cartoons, but I never saw one until recently, and this is it:
Very different from later versions of Superman. The graphic design here is like the pure essence of Dieselpunk, the very beginning of the style.
It's also a very technically accomplished cartoon, every bit as good in that department as anything that Walt Disney was doing at the same time.
I also like the feisty Lois Lane— she doesn't just wait around for Superman to show up and rescue her; if gangsters are shooting at her with machine guns, she picks up one herself and shoots back!