A world-famous photography collection owned by the bankrupt brokerage firm Refco is to be auctioned off at Christie’s New York. “Photographs in the Refco collection, known to art experts worldwide, have had pride of place on the walls of the company’s New York and Chicago offices for decades… Highlights include Richard Avedon’s photograph Andy Warhol, Artist, New York City, August 20, 1969, which has an estimate of $100,000 to $150,000. And William Eggleston’s Memphis, from 1969-70 has an estimated price of $40,000 to $60,000 on it.”