You will most likely have to go through a licensed interior design who has access to a design center. Great wallpapers like this are generally only sold through the major showrooms.

Gorgeous!

I don't know specifically. jamesthomas, llc has a web site and they may tell you. They are based in Chicago. a small firm of about 5 people.

What a lovely space

If they have not answered in the next several days, you may want to either ask the question again or contact them at the e-mail address on their website. It's not like them to not answer a question, which indicates to me they haven't seen it. :-)