[kergonath]

They also had adverts such as this one: http://www.brainmapping.org/MarkCohen/UNIXad.pdf [edit] also linked by mrpippy below.

There used to be things like this on Apple's website, too: https://www.apple.com/media/us/osx/2012/docs/OSX_for_UNIX_Us...

I can't find any mention of UNIX in Big Sur's pages, even though it is listed as certified on the Open Group's website.

[PascLeRasc]

Those are so cool, thanks for sharing. Can’t believe they got celebrity endorsements like Mark Cohen back then.