A search for renewals was done in periodicals for the years 1968 and 1969. There were no renewals for New York News, New York Daily News, or New York Sunday News. There's no evidence that copyright continues to be claimed on 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 (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.