I found Katherine Johnson's calculations at NASA [video]

Re:I found Katherine Johnson's calculations at NASA [video] by wrs on Monday May 23, 2022 @03:02PM (#31483539)

In addition to Selectric symbol balls, you could use a "normal" typewriter with a set of extra symbols on tiny plastic sticks. You would place the symbol head on the stick in the way of the typewriter's strike.

I found a Math Overflow thread full of stories about this: https://mathoverflow.net/questions/19930/writing-papers-in-p...

And see page 7 of this for pictures: https://etconline.org/backissues/ETC099.pdf

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Re:I found Katherine Johnson's calculations at NASA [video] by drfuchs on Monday May 23, 2022 @04:11PM (#31484232)

Indeed, pre-TeX, Phyllis Winkler prepared all of Knuth's papers using TYPIT sticks for all the math symbols. Unfortunately, I didn't nab her typewriter and TYPIT box after her retirement, but here's a good set of photos and explanation: https://twitter.com/mwichary/status/1098850604640755712?lang...

Also, a TYPIT advertisement on the bottom left of the third page of https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6500767

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