I'm having trouble getting any catalogue type information about VSL.
I know that it was a huge operation for a while so doubtless there is a huge amount of barely catalogued material, but it seems hard to find.
The only books or articles I have seen (too expensive to acquire, and) only show e.g. engraved crystal or modern/current products.
I'm really (only) interested in 'household' glass (pressed, blown, machined) in the period 1920-1970.
I have several suspects which I have had no feedback about.
Who has more detailed information about how to pursue my research?!
(The little I DO know is on my website at;http://www.hogelandshoeve.nl/index45.html