This film is being shown as part of the Prince Charles Cinema's sci-fi season. You can find all the details here.
Chicago Reader review:
The surprising thing about George Lucas's first feature (1971), a dystopian SF parable now digitally enhanced and expanded by five minutes, is how arty it seems compared to his later movies: off-center 'Scope compositions reminiscent of Antonioni, striking white-on-white costumes and sets, a highly inventive sound track by cowriter Walter Murch. Yet the film is just as claustrophobic as Star Wars, and its ideas are equally shopworn, drawing on Orwell, Huxley, Kubrick, and Godard's Alphaville. A young Robert Duvall plays the title drone, who escapes from a totalitarian society after he and fellow cipher Maggie McOmie discover sex. Lucas's use of northern California locations is inventive.
Here (and above) is the trailer.