Cantonment Reno, at the Powder River Crossing of the Bozeman Trail in present Johnson County, was renamed Fort McKinney after the death of Lt. J.A. McKinney in 1876. That site was abandoned in 1878, and the fort’s name moved with the troops to a new site west of present Buffalo, Wyo. The fort closed in 1894, and in 1903 the site was taken over by the Veterans’ Home of Wyoming, which remains in operation there today.

In 1869, explorer John Wesley Powell named the red-walled canyon on the Green River in Wyoming Territory “Flaming Gorge.” The Flaming Gorge Dam, completed in 1964, helps regulate water flows and its power plant generates electricity. The dam is located in Utah, but the reservoir stretches north into Wyoming near the town of Green River. In 1968, the U.S. Congress created the Flaming Gorge National Recreation Area, which is located in the states of Utah and Wyoming and draws visitors from around the world.

Toomey’s Mills in Newcastle, Wyo., began operations as Newcastle Milling Company and Electrical Light Plant in 1905, producing flour by day and generating electricity at night. In 1919, D. J. Toomey purchased the business and it remained in the family until 1965. In 1974, new owners converted it into a restaurant, the Old Mill Inn. In 1995, current owners, Doug and Larita Brown bought the property, which is listed in the National Register of Historic Places, in 1995.

Tom Horn, stock detective and hired killer, was hanged in Cheyenne in 1903 for a crime he probably did not commit. He remains controversial because of lingering questions about his guilt and the nature of the trial. Horn’s death remains important as it shows the power of Wyoming’s cattle barons, once substantial, beginning at last to wane.

Uinta County, one of the five counties of Wyoming Territory, was reduced to its present size in 1911. The Oregon, California, Mormon and Overland trails all passed through the county as well as the Union Pacific Railroad, the Lincoln Highway and Interstate 80. While the county is rich in natural resources like coal and oil and endures economic booms and busts as a result, agriculture continues to be a mainstay. Rancher John Myers established the first ranch on the Bear River drainage in 1858 and filed the first water right in what later became Wyoming Territory.

A childhood love of adventure eventually led the Belgian Jesuit priest Father Pierre-Jean De Smet to become a missionary to the Indians of the Rocky Mountains. He traveled throughout the northern Rockies, along the way celebrating the first Catholic Mass in what’s now Wyoming on July 5, 1840, during the Green River Rendezvous. In 1851, members of his party named Lake De Smet for him as they traveled from the Missouri River in present Montana to assist in treaty negotiations with the plains tribes near Fort Laramie.

Upton, Wyo., known originally as Irontown or Iron City, and later as Merino, began in 1890 as a Burlington Railroad depot near a set of sheep corrals. The town was not incorporated until 1909. The Burlington’s successor, the BNSF, remains an important employer today, as do the school district and a clinic operated by Weston County Health Services.

Emma Knight, the University of Wyoming’s first dean of women, bore four children and served seven years as the Albany County, Wyoming superintendent of schools before she finally graduated from the university in 1911, the same year as her daughter. The wife and mother of UW professors of geology—Wilbur and Samuel H. Knight—she was highly regarded by her students and colleagues. Knight Hall on the UW campus is named in her honor.

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.

Alcova Dam, a Bureau of Reclamation project, was completed in 1937. The reservoir opened in 1938 and a power plant was completed in 1955. The $20 million dam project didn’t achieve the high expectations of immense wealth that were forecast at the time of its inception, but continues to provide irrigation water for farmers and ranchers and generates hydropower for the area. Alcova Reservoir offers fishing, boating, camping and swimming opportunities for visitors.