When he was just 20 years old, Jamie Wyeth was invited to paint a posthumous portrait of President John F. Kennedy, based on studies of the late president's brothers Bobby and Ted. Vicki Kennedy and Jamie Wyeth share stories about the painting. The iconic portrait, on view at the Museum of Fine Arts, Boston, in "Jamie Wyeth" through December 28, 2014, was recently given to the MFA's collection.

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