One of the West’s longest and bloodiest feuds unfolded here and around Pleasant Valley as the Grahams and the Tewksburys, both involved in the cattle business, apparently first clashed over the division of cattle they jointly owned, and possibly stole. The introduction of sheep into the valley in 1887 further aggravated the conflict, drawing in cattlemen and sheepmen from Holbrook and Flagstaff. Historians still debate many details of the struggle, which included brand changing, cattle and horse rustling, ambushes, murder, vigilantes, and lynching, but it is well known that as many as twenty men were dead by the end.