It is unclear as to whether the press-materials were distributed by 20th Century Fox Television (the studio which produced the series) or by ABC-TV, (the network which aired the series).
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.
{{Information |Description=Publicity photo of child actor Stefan Arngrim promoting the second season of the television series ''Land of the Giants''. |Source=[http://www.ebay.com/itm/Circa-1970-Stefan-A...