This is why I keep coming back here:
1) The Steel Sterling Origin, which is pretty intense for 1940, but has that wonderful Golden Age logic ("I'll just jump into this vat of molten metal! Maybe it will give me super-powers!")
2) A western with nice horses;
3) A jungle hero with the added gimmick that he turns into a giant when eating a magic seed (and, yes, one pill makes him small...)
4) An aviation strip with beautiful planes and the worst comics lettering known to man;
and 5) a magic story in which the Great Zambini is asked to intervene in a war between Ritania and Hundaria--and no, the ruler isn't named Rufus T. Firefly...
You can't make this stuff up, folks...
Link to the book:
Zip Comics 01 1940