File:Other Worlds - November 1949 (first Issue).jpg
Magazine cover of Other Worlds November 1949 issue.
Web source: http://www.noosfere.com/showcase/pulps__magazines_americains.htm
Since the magazine was published in the U.S. before 1964, the original copyright lasted 27 years from the end of the year of publication. The copyright holder was free to renew the copyright any time during the year 1977, but they did not do so. Copyright renewals can be searched at this online books listing.
The copyright has expired.