The NMVW thesaurus has a long history, first under the name OVM-thesaurus, later SVCN-thesaurus. The thesaurus is mapped to AAT and geonames via skos:exactMatch relations.

http://collectie.wereldculturen.nl/downloads/XMLRDFthesaurus.zip

This dataset is published by a TriplyETL pipeline: internal link

This is the dataset for NMVW.