The American owners of Hereford cattle in the 19th century knew that the breed occasionally produced calves that did not develop horns.

Warren Gammon, a Des Moines lawyer, developed his plan after seeing polled Herefords at the Trans-Mississippi Exposition in 1893.

With his son Bert, he leased 5 acres (2.0 ha) of a farm that was owned by the Angus Coal Mining Company.

Beside the windmill where the bull "Giant" was tied up the first planned mating with a Polled Hereford cow took place on February 21, 1902.

This article about a property in Warren County, Iowa on the National Register of Historic Places is a stub.