The back side has the following notice stamped under the "Photofest" sticker:
COPYRIGHT 1957 COLUMBIA PICTURES CORP.
Although the film Calypso Heat Wave (1957) had its copyright renewed, there are no renewals for any of its press photos.
Public domainPublic domainfalsefalse
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs. 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.
Uploaded a work by Columbia Pictures Corp. from [https://web.archive.org/web/20230623035938/https://www.ebay.com/itm/364128265138 eBay]: :PNG version: [https://web.archive.org/web/20230623035852/https://i.ebayimg.com/images/g/DIYAAOSwfcxjzy7J/s-l1600.png front], [https://web.archive.org/web/20230623035910/https://i.ebayimg.com/images/g/tRAAAOSwhndjzy7L/s-l1600.png back] :JPG version: [https://web.archive.org/web/20230623035803/https://i.ebayimg.com/images/g/DIYAAOSwfcxjzy7J/s-l1600.jpg front]...
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