Paul, that's a good thought. Incidentally, I am slowly building a database of glass registered design numbers collating from all the sources I can find: Great Glass, both Thompson books, the National Archives online, and various other single manufacturer glassmakers. Currently it's a massive spreadsheet being populated with numbers, dates, and registrants, item descriptions, and whether or not we have images depicting each piece and images of the NA records that you have added to the board. It's going to take a while but I hope will be a useful depository for everyone once I can get it online and in a useful searchable format.