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Nibmeister's avatar

And then, someone figured out how to twist two wires together and send the signals differentially, but I'm getting ahead of the story.

rickrolled's avatar

Fascinating post! I remember reading about the Telharmonium many years ago but never heard about Cahill’s business troubles.

Also, incredible photo of those 1890’s phone lines.

Appreciate your work.

Hans G. Schantz's avatar

Glad you appreciated it. There are any number of similar photos available online, like here: https://www.pinterest.com/pin/historical-times-in-2023--979040406472637717/ I had to go digging to find one that was clearly public domain in order to share it.