I am no copyright expert, but the advertising firm I work for regularly purchases photographs to include on product labels, web pages, etc. They purchase them and the rights to use them as often as needed. This is a bit more expensive than purchasing a one-time use certificate, but it is a necessary evil of advertidsing. (For example, the pecan pie on the Karo syrup bottle, that one cost the firm $900. Add in the exclusivity certificate- they can no longer sell it to anyone else- for an additional $1,500, & you can see, it wasn't cheap to obtain the rights to that one picture, but we can use it whenever and however we want or need to. I won't even get into the cost of the pics of the babies on the Huggies packages.) My point is, if there is a quilt you really want to make and sell, contact the owner of the copyright & ask them how much they would charge you for the rights to do so. I don't see where the exclusivity would be necessary, but I'm sure you could work out something with them on usage rights. I didn't mention the prices above to scare anyone, I have no idea how much it would cost you, only to point out that most people are willing to sell you the rights for a fee. (They would rather make some money off of it than prosecute anyone.)