My grandfather had an Oliver that was old when I was small. Sorry, no pics.
He had about 100 acres of land in upstate NY and I spent my childhood summers staying with him.
He often cleared his land with one of those huge, scary Brushog mowers that was pulled behind the tractor and powered by the PTO. If you could run it over, the Brushog would chop it up.
Here's the best part...I would stand on the axle, one hand on the fender and one hand on the seat, while grandpa was mowing.
I can only imagine the hand-wringing, shrieking that would come from someone seeing that today!!