In the fall of 1969 Iowa's Adair County and the towns of Greenfield and Orient, as well as Winterset in Madison County, became the setting for a movie. Tandem Productions came to town to make the movie Cold Turkey, written, directed and produced by Norman Lear.
    Greenfield became Eagle Rock, Iowa, for the movie. As the story goes, the town had been in a steady decline ever since a nearby military base closed. An Air Force official offered the town a deal; Fix up Eagle Rock, give it better schools, stores and hospitals, and the Pentagon would get a weapons manufacturing plant to move there and bring some life back into the depressed town.
     The situation seemed hopeless until the Rev. Clayton Brooks, played by Dick Van Dyke, heard of a tobacco company’s publicity stunt: Any town whose entire population could quit smoking for 30 days would win $25 million. The tobacco company's board was convinced by its public relations man (Bob Newhart) there was no town anywhere whose entire population could give up smoking for 30 days.

     The citizens of Eagle Rock took the challenge and the campaign to sign up every person in Eagle Rock began. They reached their goal and during the next 30 days, a carnival-like atmosphere descended upon little Eagle Rock. Con artists of all types showed up to try to help Eagle Rock cope with the breaking of their smoking habit. There was a man pushing non-tobacco cigarettes, a "shady lady" came to town and opened a "massage parlor" on the square and a hypnotist attempted to counsel people.
     The leader of the Christopher Mott Society, played by Graham Jarvis, agreed to have his people police the town and citizens to see no cigarettes were brought into town by the thousands of people who came to see what was going on. The Mott Society and their leader took their work seriously and set up a road block at the depot where they searched cars and generally harassed people. Many local residents appeared as members of the society. In spite of all their problems, Eagle Rock citizens got the $25 million, a blimp flew overhead pulling a sign "Eagle Rock, future Home of the Mercury Missile Plant – with love from your President," and the final shot was of four big smokestacks spewing smoke over the beautiful little town of Eagle Rock, Iowa.

     Starring in the movie were Dick Van Dyke, Pippa Scott, Bob Newhart, Tom Poston, Vincent Gardenia, Jean Stapleton, Bernard Hughes, Judith Lowry, Graham Jarvis, Barbara Cason, Paul Benedict, and Peggy Rea, plus many hundreds of local people working as extras.
     The movie was not a great box office success, but the people of Greenfield, Orient and Winterset never forgot that magic summer. A small observance was held on the 20th anniversary of the making of the movie but no celebrities were invited to attend. The nearest to a celebrity was the return to town of Mr. Harold Johnk, who was the band teacher at the school in 1969 and who led the Eagle Rock Band (played by the Greenfield High School Band) in many scenes of the movie.
     Thirty years after the making of the movie, on September 25, 1999, a celebration called “Cold Turkey 30th Anniversary Blowout” was held on the Greenfield square. The town of Greenfield was renamed Eagle Rock for the day and citizens pledged to quit smoking for 30 days.
     Highlighting the day were the appearances of actors from the movie Cold Turkey, including Dick Van Dyke, Tom Poston, Jean Stapleton, Graham Jarvis, Peggy Rea and Bernard Hughes and producer and director Norman Lear.