Thank you.
Ok, I did not tell the entire story. The knob that actually came in the car has the rod on the knob like you describe, but the knob is far from a 1965 Dart knob. So, I found a set with switch, rod, and knob on ebay. It said something like 1965 Dodge Dart headlight switch with knob. I bought it, the switch is not good, but the knob looked decent and was what I was looking for.
So, obviously someone has cut off the rod from a whatever knob, and taken a wiper switch knob and put on it. Since the nut was not part of the package it worked. But when put in the car with the nut too, the rod is too short. This car have many peculiar issues, and it seems I am buying more issues.
Bill