Blackstone, Harry (Henry Boughton). Dancing Handkerchief used by Harry Blackstone. Embroidered white pocket handkerchief with a knot tied in one corner. An inked notation by Dr. Grossman on one edge of the fabric indicates that Blackstone used it at a performance in Bridgeport, Conn. The lengthy note written on the cloth states, in part, “Hank loaned to Harry Blackstone Sr….by Walter Schwartz the last time Harry played Bridgeport…Walter never removed the knot & gave hank to JHG as something Harry actually used in his big show.”