(not my job but close to it)
But before we belatedly entered the 21st century, I remember having to perform "surgery" on prepress pages all the time. If the copy editor found one tiny mistake, maybe a wrong letter or word, after the articles were already taped to the broadsheets, one of us would carefully cut it out with an exacto-type knife, print out a new word or letter, and tape it on the page in exactly the same spot.
It seems so archaic now, but I swear we were still doing that only about seven years ago. What about you? Ever performed a now-obsolete job? Or written about a character who has?