They called 'em Tape Trees, way back then, which begat ETree.org

Late 90s there were some great IRC channels for this. I was pretty active in one that revolved around a genre that I most enjoyed.

There was lots of "tape trading" back then. Video too. Foreign TV shows, regional programming, etc. If not technically Internet material, i think this is certainly in the spirit of the Internet Archive.

https://en.wikipedia.org/wiki/Tape_trading