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.

The White Mountain Petroglyphs in the Red Desert north of Rock Springs, Wyo., feature hundreds of images carved into a rock face between 1,000 and 200 years ago. The site is on Bureau of Land Management land, and is open to the public.

President Harrison appointed William Richards surveyor general of the Territory in 1889. He was elected governor and served from January 7, 1895 to January 2, 1899.

Guernsey State Park, near Guernsey, Wyo., boasts an elegant group of stone, timber and iron buildings built in the 1930s by the Civilian Conservation Corps, and overlooking scenic Guernsey Reservoir.

Old West adventurer, orator, barber, reported bigamist, and passionate defender of civil rights, Kentucky-born William Jefferson Hardin was Wyoming’s first African-American legislator in its territorial days.

President Arthur appointed William Hale Governor of Wyoming Territory July 18, 1882. Governor Hale took the oath of office August 3, 1882 and served until his death at Cheyenne, Wyoming, January 13, 1885.

A stagecoach station established in 1856 at the confluence of the Ham’s and Black’s Fork Rivers west of Green River lay on long-distance travel routes used earlier by Indians, fur trappers and emigrants. In 1868 the Union Pacific Railroad established a station nearby, and renamed the place Granger. The site of the old stage station and one acre of land were donated to the state of Wyoming in 1930 to honor the early travelers.

Green River, Wyo., on its namesake river and on the Union Pacific Railroad, began as a stage station. After the U.P. relocated switching and roundhouse operations there in the early 1870s, the Green River rail yard became one of the busiest in the nation. Since the early 1900s, this county seat of Sweetwater County has weathered many booms and busts of nearby oil, gas and trona development, with the railroad and county government steadying its economy all the while.

President Cleveland appointed George W. Baxter Territorial Governor in 1886. The new Governor took the oath of office November 11, 1886 and served until December 20, 1886.

Boysen Dam, named for local businessman Asmus Boysen, was constructed on the Wind River in the 1940s to control flooding and to provide irrigation water for agricultural purposes. The dam was completed in early 1953 and its power plant continues to generate electricity today. Boysen Reservoir provides recreational opportunities as well.