Luck of the North is a 1949 Donald Duck story, featuring his outrageously lucky cousin, Gladstone Gander. The story follows Donald's attempt to get him lost in Alaska with a fake map of a uranium mine.
Donald and the nephews have to rescue Gladstone.
It is one of the handful of longer duck adventure stories by Barks to include Gladstone, who mostly appeared in the 10 pagers and holiday tales.