Sorry about that. Not trying to steal your thunder or withhold information. You have done an amazing amount of detective work here and that should not go unnoticed.
Unfortunately, I thought the Letraset thing was well known and published. Tylerdurden (Dan) is the one who positively IDed the fonts about 8 years ago. I know their was debate about the size, but I didn't realize people weren't aware of what fonts were used. This is why we should be populating the wiki! Actually... if you look in the wiki, we do have an entry for Letraset Dry transfers, but we never filled it out.