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Marcus Moore Restorations

Archive for January 5th, 2020

Pneumatic tubes: technological innovation and politics in Shepherd-era Washington DC

To view images full size & high resolution, left click on each By Matthew B. Gilmore* Deep in the archives of the Smithsonian Institution is a folder labeled “Pneumatic tubes” containing just a few curious documents — three letters to Professor Joseph Henry, one from Columbus Delano dated May 16, 1873; a letter from Gen. […]