Wonder Woman: The Golden Age #1

Captain Steve Trevor crashes on Paradise Island and is nursed back to health, and has to be returned to the U.S. Queen Hippolyte's daughter has fallen in love with him, so the Queen tells her Diana the story of the Amazons and how she must not leave the island, lest she lose her eternal life. She uses the Magic Sphere to show how Trevor crashed on Paradise Island, but refuses to allow Diana to return the Captain to the U.S., so she holds a contest to select the suitable Amazon to do the chore. Diana, in disguise, wins the contest, and is allowed the return the Captain home.