This is a detailed study of Mobile Image, an artist group that built innovative projects using telecommunications in the 1980s and 1990s. Super detailed account of their experiments with satellite technology, videoconferencing, BBSs.
Most importantly, if you've seen the hullabaloo about the "portal" in NYC, you should know that Mobile Image built that in 1980 - a live, synchronous video connection between LA and NYC. It was called A Hole in Space and there's footage on YouTube.