This must have been what Ted Stevens was thinking of.
("National City Bank, tube system, central exchange" by the Wurts Bros., New York, N.Y., from the collection of The Museum of the City of New York.)
(Thanks to Omar Fernandez)
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Featured Comment by Steve G, Mendocino: "Wonderful to see an old pneumatic tube system like that. Back in the '70s I worked at Hospital of the University of Penn in Philadelphia, and a tube system ran higgeldy-piggeldy all over the dozen or so buildings that made up the hospital. Things either made it to their destinations in minutes or vanished for days, and the results of using the system for medical samples were occasionally gruesome...."