I agree that they were to be used as a crazy quilt.

I* love the idea that these were REAL crazy scrap quilts or pieces of quilts. I certainly would not cut them into smaller pieces. I think you need to consult with an antique quilt conservator to get factual input on how to protect the integrity of the quilt. I think you have a treasure to be marveled and wondered about! If you don't want them donate them to a quilt museum or heritage museum.