It’s not just when they were made, but when they started showing up in working areas inside hospitals. These are not places where you toss a brand new high production machine ~ you use, instead, handmedowns. Typing was very secondary to the process taking place in the maternity ward and at the Birth Records section at the Board of Health.
Yeah, I don’t know. My Mom was using one when she worked for Civil Service in the 1970s, but I don’t know if earlier. And that is Federal and not State govt, they might spend more money. Ours was one I think she bought when they replaced older machines tho, and that would have been in the mid 1970s.