Awesome photos and history!
There are a few of us putting together roadbook rides from time to time, but you can't really spread word of them in the open for fear of it being called an event or a race when it is in fact nothing more than a gathering of friends.
I bought www.rallypirate.com
(nothing there yet) with the intent of making an invite only forum where people who want to run roadbooks could discuss and swap roadbooks, but I haven't had the time to do anything with it yet. If anyone is wicked smaht and wants to help construct something there, PM me and we'll figure it out.
Finally, the advent of the SPOT messenger raises some interesting possibilities...