I also joined after the rec.puzzles posting and the web NPL page. Not really sure but I think it was Guy Jacobson [aka. Xemu ] whose nom I've seen but don't recall.
Source: npl-folk email from Rexhame.
None.
No data.
No data.
No data.
All content is copyright © 1893-2017, National Puzzlers' League. All rights reserved. For permissions, apply to the editor.