Wally Byam wearing his blue beret
During the Caravan trips Wally's choice of headgear had been a blue beret which he had acquired from France. This was quickly adopted by many other caravan members and became a way of recognizing each other in crowds.
"Fast Facts." Airstream, Inc. Airstream, Inc., n.d. Web. 14 Nov 2012. <http://www.airstream.com/comp