copy weaving bobbin lace 20th century collection 1962 health safety collar sewing techniques Pattern-taking textile techniques Chinese traditional Costume silk hospital database exhibition Knitting Social collecting costume sash khila't care seamstress transporting needle lace Alto Peru Hemp purse paper embroidery material data record Royal Museum of Mariemont storage stored conservation dwarf leather contamination selection criteria poison dress reconstruction cotton print dress knickers wool Balmaceda garment padding José Miguel Carrera Laos cross-stitch ICOM photostats labels identifying fibers Cotton donor long and short stitch embroidery stitches