How did your yo yo quilt turn out ? I just brought a very similar quilt from our attic. It's in the same condition as the one described here. The fabric is in great shape, it's the threads that have deteriorated. It was made by my great grandmother.
I know this thread is a few years old, but it was one of the best discussions I've found in researching restoring vintage yo yo quilts. I really like the fabrics in mine and it is one of very few family treasures.