From a completely unrelated story about data storage, I found an interesting tidbit in the last paragraph of the story....
[hr style="width: 100%; height: 2px;"]"In 1971, I visited Western Union's installation in Mawah, NH, which was mostly UNIVAC gear. (I worked at a UNIVAC site a few miles away, so I was over there to see how they did some things.) I was shown the primary Western Union international gateway, driven by a pair of real-time UNIVAC 494 computers. All Western Union message traffic between the US and Europe went through there. And the traffic volume was so small that the logging tape was just writing a block every few seconds. Of course, each message cost a few dollars to send; these were "international telegrams". [/p]Sitting at a CRT terminal was a woman whose job it was to deal with mail bounces. About once a minute, a message would appear on her screen, and she'd correct the address if possible, using some directories she had handy, or return the message to the sender. Think about it. One person was manually handling all the e-mail bounces for all commercial US-Europe traffic. One person."[/p]