[slowhandluke]

Could your typewriter type superscripts?

Even in the 60's, we could do superscripts. You just twisted the roller back 1/2 line and typed the superscripted stuff and then rolled forward 1/2 line to continue.

If you had a cheap typewriter like mine, you never quite got back to the same line.

[patriciaruth]

Even in the 60's, we could do superscripts

Yes, but the size of the letters was the same, not smaller as in these "memos".

And we definitely couldn't kern then.