Simonyi, I think he goes by. His example code from his dissertation where (again - I think) he first espoused the theory would have earlier examples still. Word was his first major project, though, and probably the most canonical "first exemplar", if such a thing is meaningful.

Simonyi invented the correct way, so it's most likely to be correctly used. Supposedly the Windows team tried to implement Hungarian notation (because it worked so well for the Office guys), which is where the incorrect usage originates.

So not only is this one of the earliest examples, but probably the largest example of correct Hungarian.

I meant the earliest code written in that notation released to the public.

It could be interesting to list them here. If you know one ancient piece of code with Hungarian notation please tell!