Luker! I can't believe you don't know. I thought you were already part of it.

CR is the common abbreviation for Classic Rendezvous. It's a subscription e-mail list of people who agree to keep discussions on the topic of 1983 or earlier lightweights, or "Keeper of the Flame" bikes (lugged steel bikes made since 1983 by small builders). You can check it out at www.bikelist.org.