Lost Tech of world fairs

Climbhigh

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While I was researching world fairs, I came across some technology we devolved from.
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They say it's called, The Pneumatic passenger railway, 1867 New York American institute exposition.

I can only imagine the things they had in the past, when ever I look for tech. at these fairs come up with stupid things like the telegraph...Really! Build a complete matropalis for stupid things.
 

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