 His first publication appeared when he was 14, illustrating a promotional issue of Robert Louis Stevenson's "Treasure Island" for Aiglon, a chocolate factory.In 1949, he started working for the two main Franco-Belgian comics magazines of that time, "Tintin" and "Spirou".For both, he collaborated on the series of 4-page historical stories which functioned as a starting point for many young artists like Jean Graton and Hermann Huppen.