“Minimum wage” in the late ‘60s was $1.60 per hour, to the best of my recollection.
That’s what I was getting paid as a drywall-sander. One of the worst jobs I ever had.
I think you’re off a little. I got my first job (aside from delivering newspapers) as a dishwasher at Howard Johnsons in 1973 for $1.10 an hour.
You wouldn’t have liked Ho Jo’s either. Less dust, but a lot more soap and water!