Thomas, there is some information on the board about S & W which should add an extra dimension, but info seems to be scarce - I have a couple of pieces, and without Nigel's (Nigel Benson) help would never have been able to identify them.
There are some pieces in the Black Country Museum website and there are catalogues I think held at the Broadfield House Glass museum here in the UK, but finding info or pics is scarce. They did some amazingly beautiful glass.
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