I posted this on the facebook wall, and didn't seem to find any mention of it here, so feel free to chase me out with pitchforks, BUT here is what I saw in the rabbit's foot photo.
If you invert the image you can kind of clearly see that it says "minco" on it. A little googling and you find Minco, Oklahoma, named after Levi Corbett, or better known for his native american name, Itawamba Minco. Now it doesn't take too far of a hop, skip, or a jump to get from native americans to casinos, so long as your willing to throw around a stereotype or two.
Whether or not this is in any way shape or form correct, I don't know. Probably not, but damn if it's not good speculation.
Here is the image of inverted butcher knife.
Rabbit's Foot