This was a small and short-lived Belgian animation studio, where he met fellow artists Peyo, André Franquin and Eddy Paape.

Morris worked as an illustrator for Het Laatste Nieuws, a Flemish newspaper, and Le Moustique, a French-language weekly magazine published by Dupuis.

Lucky Luke is a solitary cowboy who travels across the Wild West, helping those in need and aided by his faithful horse, Jolly Jumper.

During his six-year stay in the U.S. Morris met Jack Davis and Harvey Kurtzman, and assisted them with founding their Mad magazine at EC Comics.

In the 1950s, Goscinny was still fairly unknown, but he became the most successful comic writer in Europe, first with Lucky Luke and a few years later with his Asterix series.

[1] Morris's time in the United States were integral to his development, not only because of his collaboration with Goscinny, but because he gathered a great deal of documentation for his later work.

[6] Many characters in his comics are also clearly based on famous American actors, such as Jack Palance, Gary Cooper, W.C. Fields, and William Hart.

Lucky Luke is the best-selling European comics series ever, with more than 300 million copies sold, and published in more than thirty languages.