Hmmmm? In the early 70's, I used to have a piece of equipment at work made by IBM. It was a huge electronic typewriter looking machine, with a magnetic card reader which used magnetic cards to store information. It also used a removable ball of different type styles. I was producing technical literature with this system, and there were fonts for everything.
Yeah, the MTST System was similar-- only it used magnetic tape (hence, Magnetic Tape Selectric Typewriter) and was about the size of a console piano. I actually went to IBM school in Mannheim Germany to learn this dinosaur for the army. Your tax dollars at work-- probably obsolete two years later. There's probably a warehouse full of 'em somewhere.