A search for renewals was done in periodicals for the years 1972 and 1973. There were no listings for the title Screenland; there's no evidence of copyright continuing on this material.
Note that the photo uploaded is a larger, better quality copy of the one in the magazine.
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.