"Historical Figures: Good vs. Evil" from Kid Eternity vol.1 #15 (Quality, 1949) by William Woolfolk and Pete Riss
I love love love the idea of Kid Eternity summoning up historical figures to help him, and Master Man, who summons bad guys from hell itself should have been a recurring villain. Sadly, modern takes on the Kid haven't captured the charm or educational remit of the idea. Also see the Star Trek episode The Savage Curtain.