Jon Lewis was a photojournalist who joined the farmworker movement in early 1966 and worked for a year documenting the work of Cesar Chavez and the Delano Grape Strikers. In 1968, he returned to shoot these photos of Cesar Chavez and his fast for nonviolence. After Jon’s death in 2009, Yale University acquired his farmworker movement portfolio, which will be available to scholars and the interested public in 2011.