Image:IBM1620A.jpg

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IBM 1620 Model I Level A (prototype)

A photograph from original IBM announcement of the 1620.

Downloaded (and renamed and reduced) from http://www.ed-thelen.org/comp-hist/BRL61-0536.jpg

I have permission from Ed Thelen to use photos from his site.

   A THIRD SURVEY OF DOMESTIC 
   ELECTRONIC DIGITAL COMPUTING SYSTEMS 
   Martin H. Weik 
   
   Department of the Army Project No. 5803-06-002
   Ordnance Management Structure Code No. 5010.11.812
   BALLISTIC RESEARCH LABORATORIES - ABERDEEN PROVING GROUND, MARYLAND

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