After working with the DuckTales magazine, Rosa found out that the Danish publisher Egmont (at that time called Gutenberghus) was publishing reprints of his stories and wanted more.
Setelah ia bekerja untuk majalah DuckTales, Don Rosa menemukan bahwa penerbit Denmark, Egmont (pada waktu itu disebut Gutenberghus) telah mempublikasi ceritanya dan ingin lebih banyak lagi.