Help with front end alignment

The above statement is false. Camber and toe are both tire wearing adjustments on there own.

find a front end shop that can work on an old car.
This ^^^^ Camber is the tilt of the center line of the wheel from vertical. Towards the frame of the car at the top is negative, towards the outside at the top is positive. Very easy to see camber IS a tire wearing angle. Toe is also a tire wearing angle, as mentioned.

Caster is the only of the three that does not wear tires, but contributes greatly to how a car handles.

You have to be careful. There are some very unscrupulous "mechanics" out there, normally found in high volume tire shops that know how to align a vehicle so that it will wear tires out much faster than normal, but wear them evenly. No way in the world would I go to a large tire outlet for an alignment, unless I KNOW the alignment tech. ....but I do all my own anyway.