Okay, my first experience with it was in The
Twilight Empire: Robinson's War, the serialized comic in
Dragon Magazine during 2e, where it was a plot point. I then saw it mentioned in a couple places, including a
Dungeon adventure that took place in the modern world (or was it something in
Dragon...) But it stood out because I had seen it in the aforementioned comic and though "hey, this comic guy did their homework. Nice!" so it stuck with me. And I recall seeing it elsewhere, but I'll have to look.