Does anyone know anyone with knowledge of the Avery Steam Tractor & Nickels & Shepherd Separator. My grandfather owned one of each and I am trying to find out more about them. My Dad was born in 1924 and will turn 90 next month. I asked him about them after running across a picture of the steam tractor when cleaning out his house. We know that my grandfather had them before 1922 because the picture had a view of the old farmhouse in the back round. They built a new farmhouse in 1922. Dad does remember running the separator but all he remembers is the name and that it was big enough that they could pitch in bundles from both sides. If anyone can give me any information as of hp., model # or size it would help me of the above equipment it would really help me.