“Lawyers for the Georgia O’Keeffe Museum filed a legal challenge late Monday that seeks to prevent Fisk University from selling a stake in the collection that O’Keeffe donated to the historically black university. The cash-strapped school wants to sell a 50 percent share of the collection to the Crystal Bridges Museum of American Art for $30 million. The museum was founded by Alice Walton, daughter of late Wal-Mart founder Sam Walton.”