Somehow I forgot to post about it.
This week I glued back together some pieces of it which were coming apart.
So here it is.
Each "page" is an origami folded square. It makes a triangle, and then they are glued top to tail. You can still open each page to see the information that's inside.
I think i made up the design, in that I tried to make from memory something with an origami fold, and couldn't remember it (since I was on holidays in France, I didn't have my Alisa Golding with me!).
I made a foldable envelope box cover, but it's nowhere near as robust as the book itself. I may get around to reinforcing it. Or not!