I refer the Deputy to my reply on a similar question on 12 April last.
As I understand the situation, the documents in question are at present of a collection held in private hands and I have no interventionist role to play in the matter. I would point out that the services of the relevant national cultural institutions under the aegis of my Department would, if required, be available to advise on the proper conservation of these documents.
If the documents were to be transferred from private to public ownership at any time, the relevant national cultural institutions would of course have a further role to play.