Many thanks Matt! I have seen parts of this before, but not the whole publication I think. Quite a resource, and as you say a great source of cameos if anyone is in need.
The style is certainly more direct than today's H&S communication! A tad condescending perhaps, but also with a good deal of humor, eg:
Yes that's a bit of an oddity, especially as the copyright for the publication is 1914, so nothing to do with the later small-sized scripts. Your logic makes good sense. Or perhaps hired to a private factory, maybe not even a GWR build?
Then there were the china clay wagons, which right from the early days seem to have been a motley lot and with various non-standard lettering to be seen.