A 1977 essay from Paul Baran reflecting on the 15 year anniversary of his famous RAND memoranda on packet-switched networks. He gives his perspective on the "past, present and future" of computer networks.
https://users.cs.duke.edu/~chase/cps49/baran-net-perspectives-ifip.pdf
@darius Huh. Milspec section headings, two-column monospaced text. Betting he prepared it in NROFF.