Nick, if you can find a copy of the second edition of Old Glass Paperweights, published 1947, buy that too. Some items from the first edition were removed as they were later found to be of different attributions. But other misunderstandings were left as they were.
Just for fun, can you find at least three items pictured in the 1940 edition, referenced in the French section, that we now know were attributed incorrectly. And how many of the pictured items related to the English section do you think may have been misunderstood at the time?
Maybe I should split out the Bergstrom posts as a new thread?