They raised corn and soybeans, kept a few cattle, and maintained a small repair workshop where May's father serviced tractors and other machinery for neighboring farmers.
The house stood at the end of a gravel driveway, surrounded by weathered outbuildings and fields that stretched toward a line of cottonwood trees.
To outsiders, the property looked ordinary.
To May, it was the center of the world.
She had learned to walk between the kitchen and the workshop.
She had learned the names of tools before she could spell them.
By seven, she could identify basic engine components.
By nine, she could explain why a clogged fuel line could make a perfectly sound engine refuse to start.
And by eleven, she had developed an unusual habit of studying old machines that everyone else considered useless.
Her father encouraged that curiosity.
Whenever he repaired a tractor, he explained what had failed and why.
He did not allow her to operate dangerous machinery or work around unsupported heavy equipment. But he showed her diagrams, taught her how to use measuring tools, and let her help with safe tasks under his supervision.
He believed understanding came before touching.
“Never put your hand somewhere your eyes haven't checked,” he told her.
May repeated that rule so often that her classmates began teasing her.
But she never forgot it.
Her grandfather had been the person who first taught her to love old machinery.
Before his death, he spent long afternoons sitting in the workshop, telling stories about tractors that had crossed Iowa fields before modern equipment became common.
He owned dozens of manuals.
Some were so old that the pages had turned yellow.
Others contained hand-drawn diagrams of engines, gearboxes, and hydraulic systems.
He collected technical bulletins, advertising brochures, and newspaper articles about agricultural inventions.
May loved them all.
She particularly loved his small brown notebook.
Unlike the printed manuals, the notebook contained his own observations.
One page described an unusual clutch arrangement.
Another contained a sketch of a steering linkage.
Several pages were filled with measurements and dates.
Near the middle was a drawing of an old green tractor.
Beneath the drawing, her grandfather had written a sentence in his careful handwriting.
The machine they forgot was the one that taught us the most.