special promotional poster for the U.S. government-run Vista program (similar to the Peace Corps., except the volunteers worked in the United States), with an image of Dustin Hoffman and a clever tagline that references the famous "Plastics" line from 'The Graduate': "You can put off plastics for a year."
Note that this poster was later reprinted, but this is a rare original, with the text "OEO (Office of Economic Opportunity) poster 4100-6 Dec 68" printed in the bottom left