I have noticed, that all of the older versions of the original MCEdit seem to be lost from the internet (or at least I wasn't able to find any active links).
A lot of people still play or use the older versions before the anvil chunk format, which the newer versions of MCEdit don't support.
It would be a shame for this extremely useful tool to be lost to time forever, and for that reason I'm reuploading it here again.
Here's the original unmodified zip file from 14th of March 2012 exactly as I downloaded it back then:
(For some reason, it crashes on startup for me on Win 7 now. I don't remember that happening back then on Win XP, so it might need that to work, not sure, maybe it works fine for you, idk.)
I DO NOT CLAIM ANY CREDIT FOR THIS TOOL!
All credit goes to Codewarrior (https://twitter.com/codewarrior0)
MCEdit website: https://www.mcedit.net/