Ford Motor Company, the program sponsor. During the 1950s and 1960s, it was common for television networks, program sponsors and studios to use either an advertising or publicity agency to distribute publicity materials. In this case, Ford used their ad agency, J. Walter Thompson, to handle this material.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.