HP Bar Ranch was originally homesteaded by brothers, Delos Herrick Parker and Cuthbert Farwell Parker. Their family moved from Gardner, Illinois around 1892 to start a sheep ranch near Holyoke.
The family still owns part of this ranch to this day. Delos and Cuthbert then started the "Cottonwood Ranch" near Jumbo reservoir. Delos ran the ranch and owned a small portion. When his brother Cuthbert died Delos retired and ran only his portion of the land. Today the ranch is farmed by Dale Parker, Richard Hartman and Celeste Parker. The ranch currently produces cattle, corn, alfalfa, hay and cover crop forage.