ition took place three years after he died, =n 1988. One white-on-white painting, =ith just a hint of shyly glimmering shapes, sold for $139,280 at =otheby's in London in 2006. A stitched-together white canvas by =ustralian-born Lawrence Carroll was valued at between $23,200 and =32,200 at a Sotheby's auc