Yoko Ono showed up in Ketchum, Ida., this week to open an exhibit of art works by her late husband, John Lennon. Ono, who also displayed copies of Lennon’s book “Skywriting by Word of Mouth,” said Lennon’s death may be the only way the world would appreciate his work as an artist. “Strangely enough his fame in the music field was a hindrance to his working in the art world, in the sense that they didn’t take him seriously,” Ono said. The price of the original signed serigraphs range from $2,500 to $7,000. The exhibit, at the Friesen Gallery of Fine Art through January.