I quilted and bound the “great-grandmother” quilt ( I have now determined that it was pieced by his great-grandmother and not grandmother) and put it in the washer to soak in some Oxyclean. I hand agitated, let it spin out, threw in Wisk and hand agitated, spin, rinse (hand agitated again) and the final spin. I pulled out the quilt and only one block plus part of another is coming apart. It is the same fabric in both.
I am now letting it dry and when I come home tonight I will figure out how to repair.
I used the suggestion to do an overall quilting pattern and I think it worked worked out well. I made an attempt to quilt over the outside points of blocks to help secure them. I also bound in black. It actually looks surprisingly good all things considered. Now – to just get it dry, repaired and in the mail!