Bookmaking - "Buttonhole Stitch" Binding tutorial - This looks like a fab stitch. It was originally taken from a book by a chap called Keith Smith: Volume 1 Non Adhesive Binding: Books Without Paste or Glue
Buttonhole Stitch Journal by Dorothy Yuki. This open journal was made with Canson mi teinte paper and green craft thread for the buttonhole stitch that keeps all the signatures together and an antique button closure. it reminds me of bamboo.