Captain Marvel Jr. #31

Captain Marvel Jr. soars through outer space on this striking 1945 Fawcett cover by Mac Raboy, his blue-and-gold costume and flowing red cape vivid against a star-flecked sky as the Earth, Moon, and a red planet drift below him. The tagline promises "Exciting Adventure with the World's Mightiest Boy," and inside awaits "The Robombs of the Rising Sun" — a title that captures the wartime urgency of the era perfectly. A 7th War Loan stamp-and-bonds reminder on the cover is a genuine time-capsule touch, grounding this superhero adventure squarely in the world of 1945.