Martha, the quilts are wonderful. But...they belong to someone else. Honor their requests, not necessarily what you'd do if they belonged to you. Carefully remove the paper that has dates and interest and put them in a plastic bag. Great idea. Toss the rest.
My concern is it doesn't seem that the cost-to-quilt has been established. I think you need to estimate the costs, double it, and then get a written agreement on how to finish, the papers, the borders, the amount of quilting, stitches per inch, a label, etc. Whatever you feel important -- including what's NOT covered. Sign the agreement with the quilt owners and then sit down, have a cup of tea and enjoy the wonderful experience of finishing these quilts. They are beautiful