dwarf textile weaves exhibition 20th century labeling transportation collection seamstress contagious residue braiding technique legend velvet stripes theatre crochet stored fabrics Manneken-Pis Jute uniform date crewel stitch deterioriation sleeve cross-stitch transporting Ponchos inspiration Prince Frederik's coat museum silk guidelines sewing techniques arsenic weave health safety Guidelines fabric storage area Princess Margaret courtship crucifix wool prints checklist Royal Collections chain-link mesh Comparative items archives indigenous peoples padding photography dress tradition Reconstruction collective identity Preparing the public needle lace moving heavy metals