places to read old fanfiction?

I am in a lot of old fandoms, comic books thar've been around for decades especially, and I am curious if anyone has places to read old, pre-ao3 type fics?

I know that ff.net still exists and is up, but I tend to have a hard time believing that the amount of stuff you can currently find there accounts for even the years that site was popular. then beyond that, I'd be rlly interested to know if there was any online archive of old zines and the like. I know that lots of nerd communities had active fandoms even before the internet age and I want to get my hands on those artifacts...if it makes a difference, a lot of the specific things I'd be looking for are from early 90s comics (LoSH and X-Men especially), and if any exist, 60s-70s era stuff (maybe it goes without saying, but that one is Star Trek).

not sure if this is even the right place to post this q, but figured I'd try anyway!