Originally Posted by
ghostrider
All of Escher's work is still under copyright protection. For that reason, it cannot be reproduced in any medium. Sorry. It's quite easy to design your own tessellations and would make your quilt much more personal.
It would only be applicable if she were to sell the pattern or the quilt. If she was making a quilt for herself there is no problem. Copyright laws are in place to prevent people from profiting from the works of others, personal and private use is not an issue.