A driver on a steel-wheeled tractor pulling a plow toward the horizon through an unplowed field. Two automobiles are in the field in the far left distance. Another tractor is in the far right distance. A tree line on the horizon defines the edge of…
A driver on a steel-wheeled tractor pulling a plow with an unusual chain gearing system. A tree line in the background is the boundary for the field of corn stubble being plowed.
Two Ford tractors linked together as a single drivable unit and hitched to a five bottom plow. The machinery is sited in front of Davidson Hall. Ten men are looking at the machinery, another is sitting in the driving seat of the power unit. Another…
Dale Wollsoncroft demonstrating plow adjustment at a training event in State Center, Iowa, in the spring of 1949. A crowd of men is gathered around an instructor who is kneeling on the ground at the front end of a plow that is in turn connected to a…
A tractor-mounted six-row cultivator seen from the front. One man is driving the tractor.One man is also seated on each of the two rear sections of the cultivator, one on each side of the machine. The machinery and the tractor have steel wheels. They…
A tractor-mounted six-row cultivator seen from the rear. One man is driving the tractor.One man is also seated on each of the two rear sections of the cultivator, one on each side of the machine. The machinery and the tractor have steel wheels. They…
A four-row corn planter being pulled by a steel-wheeled tractor. The photograph is a close up of the part of the equipment which mounts on the front of the tractor. The photograph was taken April 27, 1931.
A tractor driver and Iowa State Professor J.B. Davidson looking at an Iowa integrating and recording traction dynamometer, mounted on the linkage between the tractor and the piece of farm machinery being pulled. The farm tractor has rubber tires. The…
A horse-drawn cultivator. The three-mule team is being driven by one man in a hat riding on the driver's seat of the cultivator. The corn being cultivated is about 12 to 14 inches high. A vast expanse of corn yet to be cultivated can be seen behind…
