Barnes & Noble Founder's Art Collection Heads to Auction: Christie's to Offer $250M+ Trove of 20th-Century MasterpiecesKick Sauber's C45 Show Car from F1 75 Launch Event Up for Auction, Offering Fans a Unique Piece of Motorsport HistoryBanking Heir Lists West Hollywood Mansion and Bel-Air Lot for Combined $102 Million