My dad started farming with an Allis-Chalmers WC and a John Deer B crawler. When he bought a bigger farm he went to a Ford (620? 650?) for a couple years, then he traded it for an Allis-Chalmers D17. Later he upgraded to a 175, which was a diesel. I mowed about 5 acres with the 175 last weekend.
The first farm I worked on used a Massey-Ferguson 35, which was my first "modern" tractor. They also had an Allis Chalmers G(?) which was a dinky little thing with weird hyraulics that wouldn't do much.
The next farm I worked on used a John Deere A, a Farmall M, and a couple Farmall cubs for cultivating. I spent a lot of hours on all of them. The John Deere was the first tractor I drove that drove me to ear plugs.
I had an uncle that used an Oliver, I briefly ran an International TD-6 crawler, and have spent brief times on Ford 8n and 9n tractors.
I guess all of those tractors are antiques by modern standards. I don't know of anyone who is actually farming with them today. They paid off a lot of mortgages, though.
