The Lost Charts of Columbus

"The Lost Charts of Columbus" is a 1995 Donald Duck comic by Don Rosa, a sequel to Carl Barks' 1952 story The Golden Helmet.

Donald's nephews asked him to accept, since this trip is to where they're going to study the chart, located in the original Junior Woodchucks Guidebook.

There, a fisherman feels sorry for Gladstone not getting any fish, but he replies by saying he's learned there's another purpose for the trip: recovering valuable objects from the sea.

Donald then tells Gladstone a very summarized version of their original adventure, and asks him to throw the helmet back at sea.

Back in Duckburg, our heroes see Gladstone leaving a press conference and ask him if he was claiming ownership of North America.

His victory, just like Azure's, was also short-lived as the nephews find an even older claim made by a Chinese explorer named Hui-Shen.

At this point, Azure Blue decides to give the Golden Helmet to our heroes, as it's no longer useful for his plans of world domination by controlling America.

The quest for ownership of North America leads our heroes to the ruins of Teotihuacan, where they find a big old teak wheel proving this claim.

Meanwhile, in a Brutopian hotel, Blue and Sharky are waiting until they have letters from enough descendants of the Chinese explorer to be allowed to rule America in their names.

Eventually, both are arrested for failing to pay the enormous bills they incurred for the Brutopian hotel's services, and the several ads taken out in China to contact the Chinese explorer's descendants.