Forum:Overseer's Door in Vault 106???

I have been running around Vault 106 for an hour now and I've found the master key but I can't find the overseer's door! From what I understand, there's not much to see there, but for my own sanity, can someone give me directions as to where to find it?? Right now I'm in the Living Quarters. I also can't seem to find the locked door with the note from the sane person...