Not specifically this one, but I can give a related example:

The National Monuments Record Centre at Swindon holds an ‘RFC official’ aerial photo of an RFC aerodrome, donated/loaned by an individual who placed a ‘not to be copied’ clause on its loan. Now this is plainly daft, since the person who loaned this particular image doesn’t hold the copyright on it.

But NMRC is adamant that the image cannot be copied, and that is (was) that.

Luckily, in the meantime I found the same image in the RAF Museum archives, and thus I now have a copy. RAFM thankfully has a more sensible approach, with various levels of fee/restriction, depending on use of the image.

I suspect Garbett and Goulding were up against similar nonsense.