FlyerTalk Forums - View Single Post - History of the status component of frequent flyer programs?
Old Sep 10, 2015 | 12:04 pm
  #8  
erik123
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Join Date: Apr 2002
Location: NYC
Posts: 9,783
KLM had a so-called courtesy card to recognize their most frequent flyers in the 70's (and maybe a bit earlier) - spouses also got one.
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