NASA Photo ID: S91-42208           File Name: 10065233.jpg
  Film Type: 4x5                     Date Taken: 07/23/91
  Title: Official portrait of STS-50 USML-1 backup Payload Specialist Joseph M. Prahl
  Description:
  Joseph M. Prahl poses for his official portrait as STS-50 Columbia, Orbiter 
  Vehicle (OV) 102, United States Microgravity Laboratory 1 (USML-1) backup 
  (alternate) payload specialist.  Prahl is from Case Western Reserve 
  University.                  
  Subject terms:
  PAYLOAD SPECIALISTS                     
  PORTRAIT                                
  SPACELAB                                
  STS-50                                  
  

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