By Eric Jacobsen
The Millers had ongoing struggles with Kels Nickell, a sheep farmer accused by the Millers of letting his sheep graze on their Wyoming land. On July 18, 1901, Willie Nickell, the fourteen-year-old son of Kels, was found murdered on the Nickell land. An investigation followed while the range violence continued.
In August 1901, Kels Nickell was shot and nearly eighty of his sheep were killed. Deputy U.S. Marshal Joe LeFors arrested Jim Miller and his sons for the crime, although bail freed them the next day.