Thanks for the reply. :-)

I understand that. What I meant is that I hope those resources are archived. And, as part of that, perhaps archive.org could target UReddit as a... source of targets, I guess.

I've been around long enough to have repeatedly experienced such resources disappearing. A professor changes institutions. Infrastructure is reorganized. Materials are deliberately removed, but the earlier license would allow independent copies to continue to exist and proliferate.

That's what I'm after.