CBS Television In the 1950s and 1960s, it was not unusual for television networks, studios and program sponsors to use either advertising or publicity agencies to distribute publicity materials. In this case, CBS used the Bureau of Industrial Service, which was a division of advertising agency Young & Rubicam, to distribute the information.
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.