The movie's publicity still with Paul Newman and Lee Marvin was photographed by British photographer
Terry O'Neill and also appears on the jacket of O'Neill's 2003 compilation coffee-table book "Celebrity." In the book, O'Neill recounts how when he arrived on the set to shoot his publicity stills,
Lee Marvin was hungover and in a foul mood. Most of the production personnel were steering clear of him. When O'Neill gingerly approached Marvin and introduced himself, Marvin asked, "Are you English?" What O'Neill didn't know at the time was that Marvin was a lifelong Anglophile--he LOVED the British. After that brief encounter, Marvin's mood changed and, according to O'Neill, he couldn't have been more cooperative for the rest of his assignment.