First I removed the end paper from the spine. Seems like “first, do no harm” is not an option today.
The hinge is broken and a curly edged piece was attached to the cheesecloth. I removed it but now wonder if I can use that for the repair or should I use the single stitch binder tape?
While I contemplate that, I know that the end paper coming off the back board will have to be glued so I mixed library glue with water to make a light adhesive.
Those things have to dry first before I can complete the rest of repair, so — patience. I did experiment with ironing the material that had been attached to the cheesecloth. It was easier to straighten than I anticipated.
It came out really nice and flat. But when I rewatched the video on single stitch binder tape, I realized that the reason this broke is that this material was not strong enough to hold such a large text block. I think it would be best to finish the repair with the binding tape.