Bob Karp worked on the earliest of these, a story called "Donald Duck Finds Pirate Gold".

Pirate Gold: Crack the clues in Lincolnshire's biggest treasure hunt.

Pirate Gold is a 1913 film starring Blanche Sweet and featuring Harry Carey.

Pirate Gold (1913)

The story was later released as Donald Duck Finds Pirate Gold.

Pirate Gold typically refers to buried treasure in pirate lore.

Qwilleran asked, "What's the Pirate Gold drink that you're pushing?"

"I'd question the secret ingredient in your Pirate Gold," Qwilleran advised.

Pirate Gold (15 October 1975): Tomsk and Wellington hunt for pirate treasure.

Pirate Gold is a 1920 American adventure film serial directed by George B. Seitz.