collecting costume dust textile fibers preventive conservation 18th century Preparing identifying fabrics macramé boxes Nutcracker date lead accession number velvet collecting policy manufacture museum floral ornaments materials conservation exhibition The Tudor Child fiber dust addresses fatal garter Prince Frederik's coat Underwear collection pattern-taking Giselle protection policies Princess Margaret vacuum stitches wearer Moulins marriage fibers reused clothes donor theatre jacket Canadian packing policy museums Le Lac des cygnes damage silk Manneken-Pis Photographs Useful tatting lace labels cross-stitch ballet pants fabrics uniform