there's also an iteration in _Gravity's Rainbow_, on page 172: "The brown wool flank of Gwenhidwy moves at the edge of his sight, a pocket of color, a holdout against this whitening day." none in _V._ or _The Crying of Lot 49_ or _Vineland_ tho', at least according to my quick & dirty effort via Amazon's "search inside the book" feature. etb