So for my history, not trying to match Bob's:

1978 internship in NYC tax dept of a Second 7 national CPA firm, when I was in charge of changing the onion-skin pages of the loose-leaf tax books;

printing last minute tax forms on green lined computer paper and photocopying them with the plastic see through tax forms so the numbers appeared on the correct lines;

hand delivering returns to clients on Upper West Side on April 15;

turning down the audit job to go to law school(me, too!)

in the first real job, pencil on input sheets that were driven to Reagan Airport for flights to Texas, which were picked up the next AM by a colleague who lived near the airport;

rinse and repeat for errors;

THEN we got PCs.