Originally Posted by Prism99

Hmmmm. There's a similar alternative method that might be more likely. The maker could have started with freezer paper squares the size of the finished squares, marked the wavy lines & registration marks & labels on the square, then proceeded to sew each square as described in my previous post. In other words, she could have used the same technique on each individual square. I actually think this is more likely because it accounts for the non-repetition of fabric order in each square.