Hi Debra, welcome to Airforums!
The window seals are readily available from Airstream dealers across the country. If you end up buying we can point you to threads where members explain how the seals are replace and provide part numbers as well. Any reasonably mechanically inclined person can do the work.
I'm not sure about the wood grain but I would bet that dealers can source that as well.
The motorhome owners of the forum have learned over the years where to find those odd hard to find parts so just ask and someone is bound to speak up.
By the way, we like pictures on this forum