Feature Comics #77 (1944)

In a 1944 tale from Feature Comics #77, Darrel and Martha—two young adventurers with quiet feelings for each other—find their shared wish to team up in their tiny mite-sized exploits unexpectedly granting them the power to shrink. Drawn by a news report of the mysterious deaths of three Bramber family members in their ancestral garden, the pair set out on a secret investigation, unaware of the strange forces they’re about to awaken.

In "Sunken Treasure!!" from Feature Comics #77, young Rusty inherits half a map from a dying sea captain, leading to the legendary Black Pirate Treasure—though the full location remains hidden. With a band of ruthless pirates hot on his trail, Rusty must reach the captain’s daughter before they do, hoping she holds the key to the missing half of the map.