Our family has had our 1950 RC 77 since the early 80s, it replaced the 60 that was sold. Rebuilt and painted the 77 a couple years ago, and still use it weekly for cutting wood, and various other chores.
Just picked up a 1941 60 this weekend, my father and I wanted a 60 back on the property. Needs plenty of work and parts, but does run ok. Pulling the engine this weekend to replace all leaking gaskets and seals, water pump and belts. Have the engine ready for spring. When it warms up a bit I will sandblast the frame and rear end, and paint. 
I have plenty of parts needed. Manifold rusted out(like to find a used serviceable one), need generator, I will be converting it to 12v, like to keep original look, so no alternators. Put in a new clutch disc, throwout bearing.
       Also carb rebuild, and new axle seals, tires..... the list goes on.
I'm in SW Michigan, seems to be a lot of Oliver owners in this area too.