(DEB15) CHICAGO, Sept. 26--STARS OF CAMPAIGN DEBATE--Presidential candidates Sen. John Kennedy and Vice President Richard Nixon pose tonight following their debate at a Chicago television studio (AP Wirephoto)(rj22310stf)1960
A search of original copyright registrations for artwork was done for the year 1960. There were no listings for Associated Press; there's no evidence of original copyright registration for this photo.
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.