Why 6 MB? Well, I bought it used without a battery, so I built one out of old NiCd cells from used cell phone batteries; this monster of electrical tape, hot glue, and hope did not fit into the spot meant for it, so with some creative dremeling and removal of a stick of RAM, I got it to "fit".
Monkey Linux was unique in one special way - it ran on top of the DOS filesystem, IIRC, in it's own partition. I think at the time I had Caldera's OpenDOS installed (speaking of which - it's not on the site, either). You could easily copy files back and forth from Monkey to MS-DOS. I never looked at it too deeply, but I bet everything was perm'd 777 root access, too - or something close.
I quickly moved on from Monkey to Turbo Linux 2.0 - but it served me well to learn a bit on (more like freshen up what I had known already from using AIX at a former employer).
Here's some links to Monkey:
http://projectdevolve.tripod.com/index.htm
http://www.ipt.ntnu.no/~knutb/linux486/download/monkey/
I don't know if you can get a complete download between those two links or not, but if WinWorld wants a full copy, they can contact me and I can send it to them.
Same for Caldera OpenDOS. I'm not sure what the last version of it I have of it, though.