I noticed by doing a search on the Yahoo! Groups home site, that there
are several letterbox-related lists, most of them regional.

There is a list for Connecticut 'boxers at:
http://groups.yahoo.com/group/TheConnecticutLetterBoxingClub/

Now, this list isn't discluding people from other locations, it just a
small, friendly group who discuss CT-related topics. Once again, not
competing...

~ Aili