In late October 1938, Harry Ferguson of England brought a Ferguson-Brown tractor with a hydraulically-controlled hitch to the U.S. and demonstrated his tractor and attached implements to Henry Ford.

Ford is now known for cars, but in its long history it also has made airplanes and, for many decades, tractors. In fact, it pioneered mass tractor production.

Considered the father of the modern frame tractor, the 1939 Ford-Ferguson Model 9N was a compact utility row-crop machine with integral hydraulics operating a unique three-point implement attachment.

I replaced the spark plugs in the middle of last winter, but the plug wires are in pretty bad shape too. They're old, and rusted, and one is broken. Part of this project was to change them out. The ...