Senes on U.S. 66 and Interstate 40 between Shamrock and the Oklahoma state line.
postmarked in 2013 with a USA 'Celebrate' stamp
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Shamrock is a city in Wheeler County, Texas, United States. As of the 2000 census, the city had a total population of 2,029.
At the end of the film Cast Away, Chuck Nolan (Tom Hanks) is seen on US Route 83 near Interstate 40, the real-life location of Shamrock.