John Littleton (American, b. 1957) and Kate Vogel (British, b. 1956) "BAG Explosion" art glass sculpture, 2004, executed in blown glass with an acid-etched surface in red, purple, ruby, aurora red, and gold, signed on underside "Kate Vogel John Littleton, 2004," 10"h x 12.5"w x 11"d