Mixalt 4000038: The Campus Butterfly - built using pieces from a Lego Architecture (Internal) Lego Campus 4000038 and a bunch of joints (not all pieces are used) : r/lego
LEGO Campus Billund Set (Architecture 4000038) - YouTube
Find Lego 4000038 på DBA - køb og salg af nyt og brugt
LEGO SET # 4000038 LEGO campus. *MISB* | eBay
4000038 LEGO Campus | BrickEconomy
Review: 4000038 LEGO Campus | Brickset: LEGO set guide and database