Cherryland Postcard Auctions
Molly Wright Steenson continues her trailblazing research project into the secret history of the lost pneumatic "series of tubes" that presaged packet switching in many contexts, in this fascinating video presentation.
April 5, 2009
Pneumatic tube-based mail systems
Categories:
Postal History,
Videos
Molly Wright Steenson continues her trailblazing research project into the secret history of the lost pneumatic "series of tubes" that presaged packet switching in many contexts, in this fascinating video presentation.
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