Covers work records, directors record etc.
No, I have no idea of the date of accession, by the archive.
It may surprise some here, after several years of contributing, that as a tri-lingual person, many of my efforts have been disregarded, ignored, maligned, impugned.
After recent events, originating with certain French-based GMB members, I have no desire whatsoever, to continue to use my skills base, in order to advance the current state of Czech glass knowledge, on GMB, or elsewhere.
Tant pis. (For our US-based friends, a TS slip).
M