Where can I find an archive of old MAS90 installations?

Where can I find an archive of old MAS90 installations?

I've been going crazy looking through our own archives and can't find them anywhere.  The ones I have found are so old, it's caused some hesitation on my part to try and use them.  Basically, I'm attempting to upgrade from an old unix based system and I'm pretty confident with what installations I need to migrate through in order to get to Sag 100 2016.

3.5 > 3.7 > 4.0 > 2016