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 The following events occurred in December 1966:
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  This article incorporates text from this source, which is in the  public domain .Brooks, Courtney G.; Ertel, Ivan D.; Newkirk, Roland W. "PART II: Apollo Application Program -August 1965 to December 1966.". SKYLAB: A CHRONOLOGY. NASA Special Publication-4011. NASA. pp. 99–103. Retrieved 8 April 2023.
 This article incorporates text from this source, which is in the  public domain .Brooks, Courtney G.; Ertel, Ivan D.; Newkirk, Roland W. "PART II: Apollo Application Program -August 1965 to December 1966.". SKYLAB: A CHRONOLOGY. NASA Special Publication-4011. NASA. pp. 99–103. Retrieved 8 April 2023. This article incorporates text from this source, which is in the  public domain .Uri, John (20 December 2021). Mars, Kelli (ed.). "55 Years Ago: Two Months Until Apollo 1". NASA History. NASA . Retrieved 20 June 2023.
 This article incorporates text from this source, which is in the  public domain .Uri, John (20 December 2021). Mars, Kelli (ed.). "55 Years Ago: Two Months Until Apollo 1". NASA History. NASA . Retrieved 20 June 2023.{{cite book}}:  CS1 maint: location missing publisher (link)