1950 ish farmall h. I was about five. My dad had me riding with him to spread manure. I would hold the steering wheel while he walked back on the tongue of the manure spreader to turn the spreader off. One time he told me over and over don't turn the wheel for any reason, I remember one time he had the tractor throttled up a little faster than normal, by the time he had told me several times to not turn the wheel for anything we were close to the end of the field and to to the combine parked in it's spot by the chicken coop. I looked up we were fastly approaching the combine. II hollered dad combine, he started yelling turn turn, but was afraid to as he said don't turn for no reason, plus was afraid he would fall off the tongue of the spreader, then how would I stop couldn't reach the pedals, thought of turning the engine off, luckily dad dashed up jumped on the seat hit the left brake saved us and the combine.