Leaves to Beads identifying fibers silk Shaggy Bear padding Facebook photographs linen display clothes transportation running stitch data record Preparing the public 20th century Rayon accession number database identification of lace filet lace exhibition Twitter pattern-taking identifying stitches tatting lace 18th century fibers collar lining chemicals Identification Cotton fashionable dress purse 19th century Acid-free Patterns false weave health safety poison public reproduction Resource folk culture sewing techniques Shanghai undergarments storage photos nurse pesticide shoes fabrics blanket stitch museum identifying lace symbolism marking and labeling Qing Dynasty heavy and awkward handling