I am starting the new year with an altered book. I removed the pages from a 1957 textbook called Vector Analysis and turned some of the pages (with good illustrations) into spiral origami delights. I was guided by Tomoko Fuse's book Spiral and thought the shape of these objects worked well with the title and content of the original book. What do you think? Enjoy. -Gina Altered Vector Analysis by Gina Pisello. Top view of spirals. Front view of the book. I used 3 different sizes of paper to create the spirals. Book partially closed. Tomoko Fuse's excellent book. Samples of the helices I used in the altered book.