Bürgermeister-Müller-Museum.
These are postcards purchased at the Bürgermeister-Müller-Museum (Solnhofen Museum) in Solnhofen, Germany.
Archaeopteryx has only been excavated in Solnhofen. For this reason, the Bürgermeister-Müller-Museum in the Solnhofen district is famous for Archaeopteryx. I also bought a book about Archaeopteryx at the museum shop.