Nils Rydahl was the first artist for Egmont, the publisher of the Danish Disney productions. When Egmont didn't have enough American stories to fill the pages of Anders And, they started a production of their own. He also did promotional art, as well as some redrawings of US material. The first Rydahl story appeared in 1962. Nowadays, Disney comics are coded by the country they are made, but there was no coding at the time. The first featured Danish codes were so-called R-codes, named after Rydahl. When other artists joined Egmont's staff (like Einar Lagerwall), the R-code system became the D-code system, which is still used today. Rydahl started out doing small gags, noticeably inspired by Al Taliaferro, but later on he developed his own style. He worked for Egmont until the late 1970s.