newcastle

Frank Mondell’s popularity and political wit propelled him to represent Wyoming on the national stage for 13 terms in the U.S. House of Representatives. Yet his legislation and political maneuvering concerning irrigation, dry farming and tribal land appropriation left a murky legacy. Read more about his life in politics.

The final Wyoming Territorial Legislative Assembly created Weston County in March 1890. Thirty years later, the discovery of oil at Osage, Wyo., halfway between the county seat of Newcastle and the small town of Upton, led to a number of cyclical economic booms and busts. Today, the county’s industries include agriculture and oil refining.