Any store that carries Red River Whiskey could potentially have some. It is a special run. The liquor store we went to, we got two of the only 6 bottles they got in and had them set aside for us before they hit the shelf. It's not cheap. Supposed to be around $30 a bottle, we had to pay $35. Their Kentucky Bourbon can be had with a duck on the bottle. It is barrel aged in Carrollton then diluted with I assume local tap water. Thus the Trinity. A bit cheaper and good stuff.
"Onward up many a frightening creek, though your arms may get sore and your sneakers may leak. Oh! The places you'll go!" ~ Dr. Seuss