https://arktiskinstitut.dk/en/knowledge-database/greenland-registry/search-in-greenland-registry
For those who have not heard of the Greenland Registry before, it offers an overview of Greenland-related archives found in archives, museums, and other collections (which we call actors) within the framework of the Commonwealth.
There are currently a good handful of actors, which can be searched in the Greenland Registry, and where you can see an overview of what they store of Greenland related archival material. And more actors are being added to the Greenland registrar on an ongoing basis.