Dad had a JD Model A and Model B -- probably mid-40's to early 50's vintage -- when I was a kid, eventually went to a Massey Ferguson 65 diesel when I was around 8 or 9.
His pride and joy was a JD Model 45 combine with interchangeable combine and corn heads like the one below that he got around 1955-56 or so. You sat right on the platform on a metal seat with only a single bar for a protective rail and nothing to keep the sun and grime off of you. It was one of the first self-propelled units in the area, and he used to do a lot of contract work for the neighbors as well as our own crops. He'd come home caked with dirt from the day's work.
Dad quit farming full-time and sold most of the equipment when he went to work full-time for the local school district when I was in about the third grade. I used to love riding on the combine, but never got to drive it, and used to love driving the tractor pulling hay wagons or cutting brush when I was around ten or so.
I often wonder what he'd think of some of the behemoths working the fields today with A/C, stereo, GPS and more. Since I got my love of travel from him (he and Mom would load four boys into an un-air-conditioned car and head out across the country every year), I also wonder what he'd think of our RV. Dad's opinion was always, "This would be a great day to be starting on a trip somewhere." Years later, Mom would say, "I don't know what we were thinking. I guess we thought we were having fun, I don't know."
Miss them both every day.