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American actor John Wayne and American actor Dean Martin having a coffee under the trees during a break on the set of the film 'The Sons of Katie Elder'. 1965 (Photo by Pierluigi Praturlon/Reporters Associati & Archivi/Mondadori Portfolio via Getty Images)

American actor John Wayne and American actor Dean Martin having a coffee under the trees during a break on the set of the film 'The Sons of Katie Elder'. 1965 (Photo by Pierluigi Praturlon/Reporters Associati & Archivi/Mondadori Portfolio via Getty Images)