An item from UCLA's school newspaper from 1969 reporting that "A computer facility here will become the first station in a nation-wide network which, for the first time, will link together computers of different makes and using different machine languages."
I've added a new avatar for our course Diigo group. It's based on a 1974 map of ARPAnet, the first "network of networks," and thus the precursor of today's Internet. I got it from Wikimedia Commons, which is a great source for all kinds of media that you're allowed to reproduce on the Internet.