Ian - Thanks for that.
I tried the NLS as you suggested and now have access.
As you say, the Heralds are very searchable and the results are very good.....once you get the hang of it !
It took me a few attempts to navigate around the website and then get the search function to do what I wanted, not easy but it works and far better use of research time than scanning through each edition on Google (interesting though they are, I found an advert for the company that imported my daughter's piano back in the 1920s).
Thanks again - Good tip !