[TUHS] Happy birthday, Internet!

[Nemo]

On 06/04/2018, Dave Horsfall <dave at horsfall.org> wrote:
> The Internet (spelled with a capital "I", please, as it is a proper noun)
> was born on this day in 1969, when RFC-1 got published; it described the
> IMP and ARPAnet.

This prompted me to look through the list (at
https://www.rfc-editor.org/rfc-index.html).  Some very interesting
titles there.

> As I said at a club lecture once, there are many internets, but only one
> Internet.

Where was this codified?  (I recall reading RFCs that referred to "an
internet" but cannot remember where.)

N.