I haven't got that many pictures of Extreme machines. Does Extreme still have a website? If they don't, did they have one back in the day? And if so, what was the URL?
We could use waybackmachine and see if we can find any information about them. Here's the link to WBM: http://archive.org/web/
They must have had one. Would explain where these came from
https://drive.google...UVl5MGM3blRCRDA