self couching exhibition Code of Ethics for Museums Comparative items indigenous peoples moving tradition cross-stitch beliefs display Goretex surface satin stitch Nutcracker unpacking Zuzu guidelines boxes clothes shoes masculine culture exhibition space forming Swan Lake masks folk dress storage area 19th century pattern-taking 20th century theatre photostats heavy metals conservation Guidelines white cotton dwarf Sculptors traditional costume festivals cotton print dress padding stripes arsenic Fleecemaking cutwork and needlework collection allergens Identification Acid-free Queen Mary of Hungary textile weaves warp emotions Le Lac des cygnes paper accession reproduction 18th century Chile courtship