I ordered the book by Haanstra: glass facts ...from Amazon!!!
thank you very much for all the help here on the forum
I am looking for books about glass, but most of them I can not use (very expensive) because they are about all sorts of glass, and I only collect glass birds, and only look each time for a different glassmanufacture or artist...
I still know different ones that I can search for...but sometimes they have a mark that I am not familiar with, and sometimes the seller of the glass bird knows nothing about the manufacture...and so I put my questions on this forum...and get nice answers! :lol: THANK YOU VERY MUCH :wink: