Hi,
Just downloaded the 4 volume set for off line reference, thanks for publishing it.
One of the websites you mention in the Why PDF format section that disappeared during the course of your research was mine (it focussed on those sprayers made in and around Birmingham) and although I had intended to put it back on again at some point, I now see no need, as you have pretty much covered it but with far more detail than I would have thought to show or had access to, so thankyou again.
Sprayerman