What are some Classic Linux [distro] versions?

We all love the classics, DOS3.3, DOS6.22, W95C, W98SE, maybe even W[FW]3.11

I wondered what some real classic linux [distro] versions were for different sytems like 386SX, 486DX66, P120, P233W/MMX, etc.

EDIT: thank you for all your awesome answers !! Though I do miss one thing in most posts: the actual version numbers ! I love Slackware, SUSE, Debian, etc, just like the next guy, but I really want specific version numbers, and maybe which version would work best on what type of machine. :) The point was, which linux distro VERSION would suit what CPU/timeline best, and would be the most used/iconic for such a system from those different era's.

Still love all the replies though, it certainly seems that Linux is not forgotten ! <3