In 1955, Goscinny, together with Uderzo, Jean-Michel Charlier, and Jean Hébrad, founded the syndicate Edipress/Edifrance. The syndicate launched publications such as "Clairon" for the factory union and "Pistolin" for a chocolate company. Goscinny and Uderzo cooperated on the series "Bill Blanchart" in "Jeannot", "Pistolet" in "Pistolin," and "Benjamin et Benjamine" in the magazine of the same name. Under the pseudonym Agostini, Goscinny wrote "Le Petit Nicolas" for Jean-Jacques Sempé in "Le Moustique." It was later published in "Sud-Ouest" and "Pilote" magazines.