It's Wally B-Y-A-M
The club is the WBCCI, Wally Byam Caravan Club international. Now the Airstream Owners Club. Wally Byam developed the Airstream. The club is divided into regional and state units.; The club has local regional and national rallies as well as club tours aka caravans.
The "big red numbers" designate the club member not the rig. They are traditionally mounted above the front and rear windows along with a round WBCCI logo. I prefer the old way but some members put the numbers on clear plastic and display in their window for club events. It is always a little bit of a thrill to see the big red numbers coming down the highway and an excuse for waving, light blinking and horn blowing.
IMHO "camping" has lost a lot of the camaraderie and friendliness of years past. Joining is a great way to meet new friends, find Airstream support, and travel.
Marshall Hall
President
WBCCI New Mexico Unit
for a photo and a quote of Wally see:
http://www.azquotes.com/quote/1277863