a 1965 PSA about radiation, nuclear attacks, and farmers--performed by cheap paper-mache marionettes

This 1965 public service announcement by the U.S. Civil Defense office instructs farmers about what to do in case of nuclear attack.  The bizarre film uses marionettes, that as one person commented, appear to have been crafted by a third grade class.  Incredibly enough, our government broadcast this film throughout the midwest, and distributed 600 16 mm copies of the film.