Thes are absolutely superb photo's Joe, sorry for the delay in responding BUT I could not get access to reply, so I had to wake Gary up early this morning (UK time) to fix the website 'technical problem', I knew I was a fully paid up member, anyway I suppose I could call Gary the "MCA Website Fixer" as it seems to be working ok now.
Now back to the first photo of the new Wallis 12-20, interesting to note it is not fitted with "manifold heat shields", also fitted with a 'paper belt pulley', a few Wallis 12-20's here in England have the 'cast iron belt pulley' and no pulley brake arm behind to stop it rotating to select the gear, I can see how that design soon changed.
Please keep these lovely original photo's rolling Joe, there is so much to digest from them, even the surroundings look interesting, wonder what is on the shelves behind???
Malcolm