This perfect (soft cover) bound book from the 50’s fell apart in multiple spots at the spine. I was asked to make it useful again. I rebound the pages used an overcasting technique. I also made new paper covers that slip into the vertically folded cover pages at their tops and bottoms.
On the back of the cover, the following (very motivational!) motto can be found:
“Solving puzzles is an activity that cultivates knowledge in leisure time.”