Spear-O-Wigwam Ranch is significant for its association with dude ranching in the Bighorn Mountains from the 1920s through the early 21st century. The ranch is also an excellent example of rustic style dude ranch architecture, especially the multi-sided lodge in the shape of the ranch’s brand-a spear extending from a wigwam. Dude ranching activities began at the property in 1923 by Willis Spear a prominent cattle rancher who served briefly as a Sheridan County Commissioner, then later was elected to serve in the Wyoming State Senate from 1918 to 1932.