Manet and Morisot: Impressions of an artistic friendship

Édouard Manet, a towering figure of Impressionist art, was also a mentor to Berthe Morisot, a female painter who's remained largely in Manet's shadow, until now. The two, whose friendship led to changes in both of their artistic styles, are the subjects of an exhibition currently at the Cleveland Museum of Art. Correspondent Lee Cowan pays a visit.