Profession cleaning of Barkcloth fabric drapery.

When I moved here 5 years ago I brought with me a bolt of 50's retro barkcloth which is made from cotton and had drapes custom made for my apartment ( See Attached Picture). I love them and they are now after 5 years needing to be professionally cleaned. After Googling the process of cleaning barkcloth I have found that it does need some special care to keep from damaging or ruining it. I know there was also another type barkcloth commonly used in Asia that was actually made from a tree bark which is not the same and I do not want to have the cleaning processes mixed up either. Anyway, if anyone by a long shot chance has had a similar fabric successfully cleaned or knows of someone here that might know someone or company with the expertise to do it please let me know. I understand it is a long shot but I did't have a clue where else I could even ask. Thanks in advance for any replies. 

https://en.wikipedia.org/wiki/Barkcloth