BOSTON - All of the precious Polaroids, a 16,000-piece collection of one-of-a-kind prints by hundreds of photographers ranging from Ansel Adams to Andy Warhol, were supposed to stay together forever. Polaroid’s corporate art collection survived a 2001 bankruptcy intact, to the delight of photographers and photo historians. Now a reorganization is forcing the once-mighty company to auction off the collection at Sotheby's. Next spring, the first 1,260 pieces could fetch $11 million...