I'm told this is how my grandparents met, in west Texas. He worked on the threshing crew, she was the cook. They married in 1938.

Steel wheels on an asphalt highway? Bet that left a mark.

The thresher is a Case but I'm not sure of the model and size. The Case eagle-on-globe trademark can be seen on the rear panel.

https://www.yesterdaystractors.com/articles/artint51.htm

McCormick-Deering 15-30 tractor -- 15 horsepower at the drawbar, 30 at the belt.

I'm not a tractor expert, but I think that's a well-worn McCormick-Deering 10-20.
The thresher could be McCormick.

Remember as a kids we'd be hunting, hiking, goofing off in the country and seeing these rusting hulks out in the country at various farms, pastures, old implement dealer graveyards and wondered: Just what kind of man or men ran such a complicated array of belts, wheels, shafts, etc. It was if we were looking at beasts from a long gone era, like a brontosaurus! Even today you can still see them sitting alone in the weeds as if waiting for that giant steam engine to hook them up.