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 Described as a “Special Hugo Awards Issue” on the cover.  | 
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 Dated June 1971 on the cover.  | 
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 Dated August 1971 on the cover. This is a world-wide edition and is available in the UK for 25p.  | 
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 Dated October 1971 on the cover. This is a world-wide edition and is available in the UK for 25p.  | 
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 Dated December 1971 on the cover. This is a world-wide edition and is available in the UK for 25p.  | 
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 Dated February 1972 on the cover. This is a world-wide edition and is available in the UK for 25p.  | 
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 Title changed from If. The last issue was a revival as a semi-professional magazine.  | 
  
 Dated April 1972 on the cover. This is a world-wide edition and is available in the UK for 25p.  | 
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 Dated June 1972 on the cover.  | 
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 Dated August 1972 on the cover.  | 
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 Dated October 1972 on the cover.  | 
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