Paul and Ann (A&P Vintage Trailer Works) are closer to Decatur than Fort Worth, though coming from Dumas that's a distinction without a difference I suppose.
They do great work, and are good people. I second Antique Pedaler's recommendation, but it's "Mayeux" which (along with the name of their business) will improve the results of your Google search.
Another excellent Texan vintage Airstream craftsman is Lance McEwan of Top's Vintage Trailer Works (Top on AIRforums) if you're willing to wait a while... 'cause my '76 Argosy is next in line there.
In the way of a disclaimer, each of them is a good friend of mine, but I have no financial interest in their businesses, and no reservations of any kind recommending them.