Silver Streak Comics #21

In "Secret Radio Messages," Red, Jose, and Molly race to the capital of Elcador to stop Zano and his Nazi-aligned forces, only to be captured and imprisoned in a former friend’s house. There, they discover a hidden panel that leads to a daring escape and a perilous journey toward the mountain stronghold of General Cados. Penciled and inked by Bill Everett, with a dynamic cover by Bernard Klein and Edd Ashe, this 1942 adventure blends wartime suspense with underground resistance, all in a 10-cent comic from the Lev Gleason era.