- Series: The Hidden World Series Record # 26570
- Webpages: Galactic Central, SFE
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Note: Publisher: Palmer Publications, Inc. Editor: Raymond A. Palmer as Ray Palmer Frequency: Quarterly Issues: 16 (#1 verified, other issues referenced on-line); Spring 1961 to Winter 1964. According to SFE3, the "Winter 1964" issue was in fact released in 1966. Price: $1.50 Note: A magazine dedicated to the "Shaver mystery". The format of issue #1 is that of a trimmed pulp magazine, but the contents and the high price make it look more like a book. All stories and essays in issue #1 were written either by Shaver alone or in collaboration with Palmer. Palmer added very extensive footnotes to the reprint of "I Remember Lemuria!" published in issue #1 and was credited as a collaborator.
- The Hidden World
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- The Hidden World, Spring 1961 (1961) [ED] by Raymond A. Palmer [only as by Ray Palmer]