Like Lunch Boy and others, there is a story.
I was (still am) in the Air Force reserves, participating in a Global Shield exercise where SAC pretends that Omaha goes up in a mushroom cloud and tries to run things from a small fort in Iowa. I was a brand new 2nd LT, and of course I was elected to run the Imagery Intelligence desk from 2000 to 0800 when absolutely nothing was happening for 12 hours. W?N (Richard Weigmann) was a fellow reservist, who took pity on the poor 2LT with nothing to do for 12 hours, so he challenged me with some most remarkable puzzles. Immediately hooked, I joined in June.
Source: npl-folk email from Besantius.
First Issue: Jul 1984