The Radio Boys Under the Sea; or, The Hunt for Sunken Treasure

"The Radio Boys Under the Sea; or, The Hunt for Sunken Treasure" by J. W. Duffield, is an early 20th-century adventure where a brave group of young friends, the Radio Boys, pursue treasure hidden within a sunken pirate ship. It begins with Phil Strong rescuing a man from danger and leads to their meeting with Jack Benton, who provides the map to the treasure in the Caribbean Sea. The friends then take on various obstacles, including a mysterious foe and the perils of the sea, facing a threatening storm during their exciting quest full of daring discoveries.