Reg'lar Fellers Heroic Comics #15

In "Dugan's Riding Akademy," a 1942 adventure from Reg'lar Fellers Heroic Comics #15, the mysterious Rainbow Boy teams up with the disoriented Hydroman after the latter escapes the clutches of the imprisoned Helium Gang. When a strange wireless signal leads them to the Rock Island Lighthouse, they uncover a smuggling ring smuggling diamonds from South America—setting off a high-stakes pursuit that pits Hydroman against the crooks while the lighthouse keeper calls for help. Written by Stephen Douglas and illustrated by Ben Thompson, this action-packed tale blends mystery and heroism in a classic Golden Age package, with the cover by Ben Thompson capturing the era’s bold, dynamic style.