The MOD plans were sold as souveniers by us (in fact I almost died printing them, bloody ammonia printer) they are a bit big, ask Nick or I have them somewhere. The pre 1950s plan shows all the light fittings (25,000 ish) but of course the air system changed after that.
They were cheaper than getting postcards printed, we also sold "MOD light bulbs" (mostly duff) but we had a few to sell, anyone got any ? ::)
More pics to come.
T
ps I think Nick has them in his new book.
The older I get the better I was !