William Louis-Dreyfus, the billionaire businessman and art collector (and father to actress Julia Louis-Dreyfus), is selling his art collection to support a very good cause: the Harlem Children's Zone, an organization that provides support to underprivileged children.

Louis-Dreyfus, who is 82 years old, has spent the past 50 years assembling a massive 3,500-piece collection, which is estimated to be worth between $10 million and $50 million.