There's a more detailed, excellent, write-up on the used of barbed wire for telephony and "How the West was Wired" here: https://www.inc.com/magazine/19970615/1416.html
There's a more detailed, excellent, write-up on the used of barbed wire for telephony and "How the West was Wired" here: https://www.inc.com/magazine/19970615/1416.html