Hey Carol!

 CS> Reference, 1983, A school in Navy.  Also 1989-1995 A school
 CS> instructor.

You have my (personal) reference beat as it goes back to a first year university computer science class back around 1973-ish.  I definetly don't recall there being line lengths in punch card production.  What I do recall from that time is me promising myself to never have anything to do with computers after that experience.  I lived up to that promise until the late 1980s and by that time there were no punch cards to be seen, thank goodness.  Nine track tapes were just starting to be phased out around then.  In fact it was the act of porting data from nine track to exabyte (external scsii on a sparc2 to a networked nine track drive) that prompted me to learn c and unix.  ftp became my game with a tad of telnet thrown in.  That was just before running across fidonet.

Life is good,
Maurice

... Lef mon l‘ces behofa¨; l‘ran sceal mon geongne monnan.
    A sick man needs a doctor; a young man should be taught.
--- GNU bash, version 5.1.16(1)-release (x86_64-moosile-linux-gnu)