The thing about all these old tractors is that probably two-thirds of the infrastructure we use today, was built by them - roads, highways, dams, railroads, irrigation canals, housing developments, you name it. And tough men drove those machines in all kinds of weather, with no cabs, no heating or air-con, no power steering or fingertip controls.
Lousy steel wire rope, it wore out every couple of hundred hours, and you fought the old stuff out, and the new stuff in, and you wore the spikes from broken wires in your hands.
Grease zerks!! A hundred on every machine, sometimes more! You just got to admire that generation, they're practically all gone today, a lot with shortened lives thanks to many dangers, but their fine work still lives on.