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.

William Henry Jackson’s artistic passions began during childhood in upstate New York. By age 15, he was retouching photographs for professionals. His photos of the West, especially Yellowstone Park, many of them made in the 1870s with the Hayden survey, had an enormous influence on public perceptions of the American West.

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 Secretary of State in 1946, Arthur Crane became acting Governor in 1949 at the age of 72. After his term as Governor he wrote many articles on education and was active in many education organizations.

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.

The story of uranium in Wyoming is a high-stakes drama whose cast includes fever-driven prospectors, ranchers defending their property rights, government officials intent on national security, entrepreneurs, engineers and world-class mining companies.

Home to 19 of Wyoming’s first families, the Historic Governor’s Mansion was occupied from 1904 through 1976, opened to the public in 1977 and extensively renovated in 2004.

On May 16, 1986, David and Doris Young took 154 people hostage at the Cokeville Elementary School in tiny Cokeville, Wyo. and detonated a bomb inside. The Youngs both died that day. Everyone else survived, and many who did recalled the tragedy with memories of the presence of angels.

White settlement in Sublette County, Wyo. traces its roots to the late 1870s, when cattlemen brought herds to the pastures where North, Middle and Piney Creeks join the Green River. The town of Big Piney was incorporated there in 1913. The next year, neighboring Marbleton was incorporated a mile away, on higher ground on the bench above Piney Creek. Every effort to combine the two towns has failed, and they continue to maintain separate governments though they share most other services. The energy industry is now the major employer in both communities. Big Piney registered a population of 552 in the 2010 census, and Marbleton, 1,094.

The Connor Battlefield is a park on Tongue River in Ranchester, Wyo., marking the spot where Brig. Gen. Patrick Connor and about 475 U.S. troops and Pawnee scouts in August 1865 attacked a village of 500 Arapaho under the leadership of Black Bear and Old David. The Arapaho suffered 33 killed, and the troops burned their lodges and drove off most of the horse herd. Today the park offers picnic grounds, a campground and a monument to the event.