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Hire a STEM PhD, though, and he/she will be familiar with TeX (or LaTeX) for math typesetting; might even know other stuff.
I've got a book from the fifties(?) that describes math typesetting with a font box appendix, one from the sixties that describes computer (IBM 709) with Flexowriter and Photon 560 for output, but no commercial software (book title is _Computer Typesetting Experiments and Prospects_, Barnet, Michael; MIT press, 1965). I'm pretty sure mostly it was symbol typeballs and Selectrics for that decade.
By the late seventies, nroff and troff were established, and in the eighties came TeX, LaTeX and inexpensive laser printers.