SATNET, ARPANET, THEORYNET

Cerf and Kahn mount a major demonstration, ‘internetting’ among the Packet Radio net, SATNET, and the ARPANET. Messages go from a van in the Bay Area across the US on ARPANET, then to University College London and back via satellite to Virginia, and back through the ARPANET to the University of Southern California’s Information Sciences Institute. This shows its applicability to international deployment. Larry Landweber of the University of Wisconsin creates THEORYNET providing email between over 100 researchers and linking elements of the University of Wisconsin in different cities via a commercial packet service like Telenet.

1977

https://www.computerhistory.org/internethistory/1970s/