The flour mill that ran Hillsdale for ninety years

Cook and Ferris built a gristmill on the St. Joseph River in 1838, back when grinding a neighbor’s wheat was about all a Hillsdale mill could do. Frederick W. Stock changed that. A German immigrant who knew the milling trade, he bought the place in 1869, renamed it the Hillsdale City Mill, and started shipping flour by the railcar instead of the sack.

The railroad made it possible. Hillsdale sat on a busy line in the late 1800s, and Stock’s flour rode it out to grocers across the country. He kept reinvesting, his sons came into the business, and the company became F.W. Stock & Sons. At its peak it was the largest family-owned flour mill east of the Mississippi River — a serious claim for a county-seat town this size.

The mill shaped the whole family’s footprint on the city. One Stock built the Italianate mansion still standing in town; another Stock’s wife, Wilhelmina, drained a swamp behind her house into the gardens that became Mrs. Stock’s Park. When you grow up around a mill that big, you leave marks all over the map.

The Stocks sold to Pillsbury in 1959. Pillsbury ran it, then General Mills bought Pillsbury, and in the early 2000s the milling finally stopped. The tall brick complex on the river outlasted the company that built it, the way old mills tend to — too big and too well-made to knock down in a hurry, a ninety-year run frozen in masonry beside the water that first turned its wheels.