On another list, populated by people with good guessing skills, poor memories
and so on, the question of where did the RG numbers come from?

The most popular answer told with the most auhtority is that RG stands
for "Radio Guide", as a device, the predecessor to wave guides.

I was under the impression, and may have read from a better source that it
does indeed stand for Radio Guide, but that was a tile of a book.

Is that the case, are we all wrong?

If it is from the title of a book, does anyone have a link to, or can send
me a (scanned?) copy of it?

TIA,

Geoff.

--
Geoffrey S. Mendelson, N3OWJ/4X1GM/KBUH7245/KBUW5379
"Owning a smartphone: Technology's equivalent to learning to play
chopsticks on the piano as a child and thinking you're a musician."
(sent to me by a friend)