There's a Donald Duck cartoon by Carl Barks called The Golden Helmet that deals with the discovery of America by the Vikings, and then Don Rosa made a follow up

There's a Donald Duck cartoon by Carl Barks called The Golden Helmet that deals with the discovery of America by the Vikings, and then Don Rosa made a follow up that brings up the Celtic theory, among others. https://en.wikipedia.org/wiki/The_Golden_Helmet https://en.wikipedia.org/wiki/The_Golden_Helmet https://en.wikipedia.org/wiki/The_Lost_Charts_of_Columbus https://en.wikipedia.org/wiki/The_Lost_Charts_of_Columbus