Lost Prospectors is an unproduced animated short that was to have been released in 1938.
Donald and Gus Goose are prospectors lost in Death Valley. Tortured by heat and thirst, they trek across the barren terrain in search of water. They encounter various mirages, including a group of Lorelei ducks lounging by a swimming pool. One of the girls sips a cool drink and beckons to them. While Donald investigates, Gus, with the aid of his lucky derby hat, discovers a strange capricious laughing spring and is able to quench his thirst. Donald tries to trap the elusive water, but is unable to get a drop.