* A search for renewal was done in periodicals for the years 1975 and 1976. There was no listing for the Bridgeport Telegram. The photo is part of an Associated Press story, so renewals of artwork (includes photographs) were also checked for the same years; there were no listings for Associated Press. There's no evidence of current copyright.
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.