Tim und Struppi — Carlsen Comics
Issue: #15
Tintin and Captain Haddock receive an invitation from Professor Calculus to come to Syldavia, where Calculus is in the country working on a top-secret project in a state-of-the-art secure government facility.
Creators: Hergé
Characters: Colonel Boris, Doctor Patella, Baxter, Miller, Snowy, Nestor, Captain Haddock, Dupond, Dupont, Professor Calculus, Frank Wolff, Tintin