Czech documentary

[LHFarmer]

Someone posted this query on the Czech newsgroup:

Subject: Seeking Czech Documentary Title
From: "Gary D. & Donna L. Howland" <howland2 at snowcrest.net>
Date: Sun, Dec 7, 1997 9:30
Message-id: <348A6CC4.1809 at snowcrest.net>

Hello
Can anyone here help me with the title or any other information about a
Czech documentary film regarding glassmaking, sometime prior to 1962?
Thanks
Gary
howland2 at snowcrest.net