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.

Elected Governor of Wyoming in 1898, DeForest Richards served until his death four months into his second term in 1903.

Wyoming's fossils have been important to science since the 1870s and continue to be useful today. Remains of Triceratops, Diplodocus, Tyrannosaurus and others have helped answer—and raise—many questions about the ancient history of the planet and have captured popular imagination with their size or fierce appearance. The scientific value of these fossils and the public interest in them has brought collectors who excavate fossils and ship them to museums all over the country for further study and display. Only a few major finds from Wyoming have remained in the state.

Anchor Dam was built in the 1950s on upper Owl Creek in Wyoming’s Bighorn Basin. The bedrock under the reservoir site is porous, and the reservoir has never held much water. The U.S. Bureau of Reclamation more than doubled its initial costs with subsequent mitigation efforts, which proved unsuccessful. The dam stands today high above a small pool of water.

Mary Hughes was just 17 years old in 1908 when the No. 1 Mine exploded twice in one day—and for the second time in five years—in Hanna, Wyo. Her story shows the devastating impact that coal mine accidents had on families like the Hugheses across Wyoming’s mining communities, and reveals her determination to survive disaster.

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.

Devils Tower, a basalt column rising 1,267 feet above the nearby Belle Fourche River, was the nation’s first National Monument and remains important to tourists and the many tribes that hold it sacred.

German-American landscape artist Albert Bierstadt captured a transformative time in American history. His travels through Wyoming and the West gave Bierstadt a one-of-a-kind perspective for painting his best-known works in the 1850s and 1860s, and his grandiose landscapes and their idealized, pristine panoramas have sparked the imagination of generations.

Created in 1868 before Wyoming was even a territory, Albany County and its vast plains are still good for livestock grazing. Thanks to the Union Pacific Railroad and early gold and copper mining, however, the county was industrial in its earliest times. Laramie, the county seat, was chosen as the site of the University of Wyoming in 1886, and the university stabilizes the town’s economic and cultural life.

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.