My Dad took the car home with him to another city where he has a good mechanic. Apparently, the mechanic found the steering to be done up too tight. By loosening the steering, the rattle at the top of the steering column is now gone. I just heard from my Dad, and I will let you know when he returns in about a week if I am satisfied with the repair.
The clunk in the rear end upon acceleration turned out to be bolts holding the transmission, which had managed to loosen slightly.