This book is called Census Taker, because i raided an existing book to use its hard cover spine. So i kept the title and the opening pages.
The beautiful calendar from which I stole the illustrations is Giorgio Maria Griffa and here is his site.
the form is a pop up accordion as outlined in The Art of the Fold (which I’m working my way through this week)
i originally had some difficulty making the pop up NOT expand beyond the book boundaries (the guts kept refusing to fold back in), but it seems to have been fixed now, as you’ll see in the video.