Hi Diane
Thank you for posting your article and welcome

There is another thread running about Thomson's silvered glass as Sue has mentioned. I've posted quite a lot of information on that thread and I have a couple of questions.
There doesn't seem to be any back up source evidence available to view, or in the books (numerous titles looked at, but not exhaustive), that Powell and Sons Whitefriars definitely made the larger glass 'double-walled blown and coloured cased items'.
There is some evidence from the court case that they may have made an inkwell, although that is unsubstantiated in the court case.
And there is evidence that Thomson said Mellish was hired to go to Powell's to oversee items being made. But it doesn't say which items.
It does seem that some of the items (created to be double walled by making an inset for them, rather than blown as double-walled it appears) were Bohemian glass.
I have found that there was an article published a few years (perhaps two ?)ago. I cannot now re-find where I read this but wondered if you knew about it? Might it contain evidence of which items were blown at Powell's is what I wondered?
Any help is much appreciated.
m