Donald Duck & Co #4/1976

In "Luftfotografen," Donald Duck and the boys are pulled into a mysterious adventure in the ancient fortress of Svartskog, Dunkelstan, when Skrue sets out to find a legendary sphere capable of turning metals into gold. Armed with forgotten texts and a deep knowledge of old lore—though, as always, it’s Hakkespettboken that proves most reliable—this quest leads them through secrets buried in stone and shadow. Written by Carl Barks and Vivi Aagaard, with art and inks by Carl Barks, and a cover by Antoni Gil-Bao, this 1976 Egmont issue captures the classic charm of Duck comics at their most whimsical and adventurous.