Page 2 of the Substory (and original title) "La Lune d'automne au-dessus du monastère". Published 04.02.86 in Spirou 2495. Poussin just in one case but this page sticked with me when I read this story. The cat chasing the bird, the large case with the spectacular view onto the city is enough for me to find it a perfect example of Le Galls early albums.