Pif Gadget #1638 was published by Editions Vaillant on November 1, 1976, as part of a series that began in 1945. Jean Tabary and Michel Motti write, and art comes from André Chéret, Guillermo Mordillo and Louis Cance. It features Pif, Hercule, Placid, Muzo and Pifou, among 8 characters catalogued on VerseDB.