1970s Angel preventive conservation Queen Juliane Marie Guidelines ICOM customs hair symbolism Museo Histórico Nacional Weaving identifying fibers policy Nylon labels fabrics collecting policy shuttle silk Canadian Storing Useful cutwork and needlework risk Publications Laos arsenic 19th century Preparing elasticity reproduction exhibition Paco Rabanne lining transporting buttonhole stitch Swan Lake popular culture gown pest management wearer knitted lace tradition filet lace Marking Viscose accessories long and short stitch fashionable dress Underwear Hans Maler cotton Australia contagious residue collar forming story acid-free tag locally made clothes 18th century