Is there an exclusive repertoire, catalog or repository of illustrated albums for adults?

Hello,

I am afraid Vieremä library does not participate in the Ask a Librarian service. Try to contact the library directly by email or phone. Contact details: https://rutakko.verkkokirjasto.fi/en/-/viereman-kunnankirjasto

You can search for material in the collections of Rutakko libaries, which includes Vieremä, here.