[DB]

On the Selectric.org site the operator was saying he couldn't find a ball with a "th" symbol on it.

Also, being a typewriter, I don't think whatever symbol is being printed can extend very much above the top of line due to the mechanics of a typewriter. The superscript on the documents in question are significantly higher than the top of line. Without rolling the paper down half a line I don't think you can do it. And what typist would do that?

On a computer, that's standard output.

[ladyjane]

I don't think whatever symbol is being printed can extend very much above the top of line due to the mechanics of a typewriter

Years ago you could get special symbols for regular typewriters, IBM Executives and IBM Selectrics. The symbols included the th. If you look closely you can see the th doesn't go any higher than the " sign or the ' or the ^.