John, Thanks for the clarification about the month/year of the Olympia One's debut.
Ray, Thanks for informing us about the Regency Series shampooer. I thought that was unusual that it wouldn't have been manufactured along with the other machines. If you find a photo of one please post it in this thread. Regarding the model of that and the Special Edition one I wonder if they are stamped on the bottoms of the machines (where the brushes are) like other Canadian-style machines? Interesting that the Special Edition's manual doesn't state it somewhere.
I also appreciate the B-8 anecdotes and photos of your early machine. Did yours have the starbursts on the shampoo tank? It seems to me that not all the aqua machines had them. I could be wrong.