I am needing some help finding a piece of work, I am not sure if it actually exists or not.

In Stephen King's The Mist, David has a piece of artwork that was ruined that was of the Gunslinger. I am looking for that picture. I would prefer it as an oil painting, but I will gladly accept it as a poster to decorate my living room.

Does anyone know where I can find it, in all my searching I have come up empty handed. Though I do admit that my Google-foo is not very strong. Thank you so much in advance!