The rifle looks like it has the potential of being a Kentucky-made gun. Seven or eight Grahams worked in central Kentucky, most of them related. The stock architecture, barrel length, tight side facing around the lock mortise, the significant tab behind the front hair trigger, and what appears to be a longer two screw tang all support this possibility. However, without knowing the first initial ahead of the "Graham" name, we cannot be sure who made this rifle. Is there any trace of the first initial left on the barrel...since that is critical to identifying the maker of this gun?
The various Graham gunsmiths from Kentucky are well covered in the newly released book, "Kentucky Gunmakers 1775-1900" which is advertised on this site under the "new books" in "to classified forums" at the top of the page. William Graham was perhaps the best known Graham gunmaker in KY, and one of his sons, James M. Graham, may have been the maker of Crockett's presentation rifle. Again, please check the barrel to see if any trace of the first initial remains, to help determine which Graham may have been the maker. It would also be helpful to see a picture of the tang at the back of the barrel, rear ramrod pipe, and the rear side facing with the lock bolt heads. Shelby Gallien