No doubt it's already in many archive sites though, you could just fetch from them instead of the original?
Gotta hit the search I feel :)
I don't think that's being a dick for old-web sites that still exist today. Most of the information is text, the photos tend to be small, it's all generally static (ie, light-weight to serve), and the implicit intent is for people to use it.
But it's pretty slow-moving, so getting it from archive.org would probably suffice if being zero-impact is the goal.
(Or, you know: Just email the dude that runs it like it's 1998 again, say hi, and ask. In this particular instance, it's still being maintained.)