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 Given as #13 on spine. |   | 
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 Special editors issue. |   | 
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 Title changed from Other Worlds Science Stories. | 
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 In the early issues several stories were enthusiastically forecast which never appeared. In addition, late in its run several stories were forecast that hadn’t appeared when the magazine folded. | 
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 A replacement for Other Worlds, which had used “Science Stories” as a subtitle. | 
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 A second replacement for Other Worlds, which became Other Worlds Science Stories again after 10 issues. | 
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 Title changed from Universe Science Fiction. Issues contained dual numbering both continuing the numbering of Universe Science Fiction and the numbering of the first series of Other Worlds (Science Stories). | 
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 This issue, alone, was called just Other Worlds in the Table of Contents. |   | 
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 Given as #21 (42) in the Table of Contents. |   | 
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 Title changed from Other Worlds Science Stories. Although announced as being a “new magazine” it (intermittently) continued the (main) numbering sequence from the previous title. After the first four issues, listed here, the magazine continued as a non-fiction title. | 
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 First “Flying Saucer” issue, only fiction indexed. In this issue, “Flying Saucers” is printed in capitals in the title in the Table of Contents and in a much larger font on the cover. |   | 
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 In this issue, “Other Worlds” is printed in capitals in the title in the Table of Contents and in a much larger font on the cover. |   | 
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 Second “Flying Saucer” issue, all non-fiction. In this issue, “Flying Saucers” is printed in capitals in the title in the Table of Contents and in a much larger font on the cover. |   | 
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 Given as October 1957 on the cover. In this issue, “Other Worlds” is printed in capitals in the title in the Table of Contents and in a much larger font on the cover. |   | 
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 Details supplied by Darren Heil from Table of Contents. |   | 
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 Issue partially indexed. |   | 
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 Details supplied by Kenneth R. Johnson, listing fiction only. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Listing all fiction. Details supplied by Richard Newsome from Table of Contents. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 Issue partially indexed. |   | 
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 One issue. | 
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 Details supplied by Denny Lien from an online copy at HathiTrust. | 
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 Title changed from Our Continent. | 
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 Details supplied by Denny Lien from an online copy at the Internet Archive. | 
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 Details supplied by Denny Lien from an online copy at the Internet Archive. | 
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 Details supplied by Denny Lien from an online copy at the Internet Archive. | 
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 Title changed from The Continent. | 
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 Fiction contents only, also contains article, essay, editorials, and poems. |   | 
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 Details supplied by Denny Lien from an online copy at the Internet Archive. | 
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 Details supplied by Denny Lien from an online copy at the Internet Archive. |