It's a bit of a minefield with the use of descriptors. I think of Bohemian glass as ' who made it and who decorated it?'. Loetz made for other makers, so did Josephinenhutte as far as I know. And many makers supplied to the distributors. Then there are the glass schools. Trying to get to grips with the 'middlemen' has eluded me. I have to look them up every time to ensure I've got the structure right - i.e. maker, or maker and decorator, distributor, overseas agent/seller' I still have to look at a map to see where a particular glassmaker was based complicated by the difference in German name for a region and the Czech name. Truitts has been an invaluable book from that perspective.