Cyril Davenport, English Embroidered Bookbindings
“ Thus it may be taken as an axiom that, for the proper working of an embroidered book, except it be tapestry-stitch or tent-stitch, on canvas, which is flat and strong of itself, there should invariably be a liberal use of metal threads, these being not only very decorative in themselves, but also providing a valuable protection to the more delicate needlework at a lower level, and to the material of the ground itself. ”
