Click to open image viewer. This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information ...
Click to open image viewer. Pitney-Bowes Universal Model D, Number 5083 canceling machine was part of the postal facility set up at 90 degrees South latitude (the actual South Pole) in 1956. Known as ...
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