Lehman's in Kidron, OH
They sell all sorts of non-electric stuff, prices are decent to a bit high but hey, if they have it and no-one nearby does...
If no joy there, there's a place local to me that might have some bits, plumbing/pipe/pumps place that has been around forever.
This is a deep-well pump, yes? With the pump cylinder down in the well, and a sucker rod that runs down through the drop pipe to the cylinder?
Depending on how far down the water is--if no more than 20 feet--you might be able to just put one of those $40 shallow-well hand pumps from TSC on the well, if all you're after is water for a garden or something. You'd still have to remove the old pump first. But 20 feet of PVC sure is a lot lighter than the same length of galvanized
and the operating parts would be easily accessible in case of failure. Though that old pump sure looks neat.
For pulling the old drop pipe, you can get a "pipe grabber", that you can attach a winch or come-along to, attached to a tripod set up over the wellhead. If you take it apart, joint by joint, when removing it--DON'T drop the remaining lengths down the well