Image: MastersOfSleep
Description: Cover of October, 1950 edition of Fantastic Adventures featuring "Masters of Sleep" by L. Ron Hubbard. Artist is Robert Gibson Jones. Copyright was either Jones, or more likely Ziff-Davis, who published the magazine.
Title: MastersOfSleep
Credit: http://www.collectorshowcase.fr/fantastic_adv__page_9.htm (specific image link http://www.collectorshowcase.fr/images2/fantadv_5010.jpg)
Author: Fantistic Adventures / Robert Gibson Jones
Permission: Since this magazine was first published in the U.S. before 1964, the original copyright lasted 27 years from the end of the year of first publication. The copyright holder was free to renew the copyright any time during the year 1978, but they did not do so. (All copyright renewals after 1977 can be searched online here.) The copyright has expired.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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