Based on the paint on original distributor cap and the paint on the spark plug wires, this tractor has not had either replaced since Dad bought it in 1970. The points and condenser in tractor has been replaced and seem to be in decent shape.

So we started locating the supplies for a tune up. Here's the distributor cap we finally tracked down at Advanced Auto.

The 'car' parts stores actually had the Distributor cap, and the rotor. They had to order an oil filter for me.. And I got a new wire set and 'tune up' kit from Tractor Supply

This is the AL-35 - Now AL-15 distributor cap. This cost less than $7