Reply #91: Thank you, islandmkl, for the pointer to truedelphi's posting...

[royable]

...about the IBM Mag Card typewriter. I'd never heard of it before.

"A combination of three of IBM's most significant technological achievements was added to the OPD product line in April, 1972, with the announcement of the IBM Mag Card "Executive" Typewriter. Designed to fill the needs of typing stations where appearance of the typed document is a prime consideration, this machine combined the quality of proportional lettering, the convenience of single element typing, and the efficiency of magnetic media."

So, forget I said anything in my original posting. I've learned something here. Thank you.