Logical map of Arpanet, May 1973 by Paul Newbury

This morning this picture was shared across my Twitter timeline: It is the logical map of complete 'internet' in 1973, created by Paul Newbury, whose son David (@workergnome) recently shared it on Twitter. Wow, the Arpanet fitted on one single sheet of paper a few decades ago. :) Reminds me again how 'new' this webfangled...