I think this is it:
http://users.cis.net/coldfeet/doc10.gif
The problem with that argument about the superscript is that I don't think that's the same font as the Killian memos. That document definitely looks typewritten, while the Killian ones don't.
Also note, with interest, that:
1. The first ordinal is not only superscripted, it's underlined.
2. It's obviously a typewritten, rather than word processed, piece. Note the "jumpy" letters in TRNG...
3. It's obviously a monospace typewriter, anyway, so how is it relevant to the matter at hand?