On September 2, 1885, long-simmering tensions between white and Chinese coal miners in Rock Springs, Wyoming Territory, boiled over into a massacre in which whites murdered 28 Chinese, wounded 15 more, and looted and burned all 79 shacks and houses in Rock Springs’ Chinatown. Though the remaining Chinese miners wanted desperately to leave Wyoming, the Union Pacific Railroad, which owned the mines, refused to grant them railroad passes or the back pay owed them. The Chinese finally had no choice but to return to work, which kept wages low and the coal flowing from the mines.

The Welsh-born Episcopal priest John Roberts arrived in 1883 at Fort Washakie on what’s now the Wind River Indian Reservation in Wyoming, became a friend of the Shoshone chief Washakie, and served the Shoshone and Arapaho people with a loving paternalism well into his old age. John Roberts died in 1949.

What’s now Crook County, Wyo., was crossed by Custer in 1874 on his expedition to the Black Hills, the spark that led to the final struggles of the Indian wars on the northern plains. Ranchers a few years later brought in cattle and later, sheep, and the county was organized in 1885, with its county seat at Sundance. Harry Longabaugh, a.k.a. the Sundance Kid, spent 18 months in jail there. Coal deposits were exploited in the 1890s and shipped by rail to gold smelters in nearby Lead and Deadwood, So. Dak. Devils Tower National Monument, established in 1906 as the first national monument in the United States and still a sacred place for the Sioux, is located in Crook County. Agriculture, mining and timbering still play significant roles in its economy.

The Powder River Basin sports a colorful history. Bones of bison slaughtered by people, found south of Sundance, Wyo., date back 6,000 years, and northeast Wyoming remained a favorite hunting ground for American Indians into the late 19th century. At that time the Powder River Basin was the scene of violent conflicts between the Indians and U.S. military men. Abundant grass made this region a favored spot for cattle and sheep ranchers. Under the grass is coal—so much of it that about 40 percent of the coal mined in the U.S., comes from the Powder River Basin.

The mystery surrounding the Pedro Mountain Mummy, discovered in the 1930s about 60 miles south of Casper, Wyo., by two gold prospectors, continues to intrigue people. While some sensational media accounts indicated the mummy might have been one of the little people of American Indian folklore, scientists who studied the artifact in detail have concluded that the mummy was an infant who died because of a congenital defect.

The Fetterman Battlefield, southeast of present Story, Wyo., marks the spot where Capt. William Fetterman and all 80 men under his command were killed Dec. 21, 1866 by Lakota Sioux, Cheyenne and Arapaho Indians.

Created in 1911 and named for President Abraham Lincoln, Lincoln County is perhaps best known for its extraordinary geological history, showcased at Fossil Butte National Monument. The county seat, Kemmerer, Wyo., is the site of the first store opened by James Cash Penney, founder of J. C. Penney & Co., a business that still operates nationally today. Agriculture, mining and oil and gas industries continue to spur the county’s economy.

Perhaps best-known now for the annual Cheyenne Frontier Days celebration, Laramie County, the seat of Wyoming’s government, continues to be an important transportation crossroads. Cheyenne’s Francis E. Warren Air Force Base traces its roots to a 19th century military outpost and still plays a significant role in the county’s economy.

When Thomas Boylan started collecting dinosaur bones on his homestead in 1915, he first envisioned completing a dinosaur skeleton and using it to attract customers to his gas station on U. S. Highway 30 near Como Bluff. However, he was told that he didn’t have enough bones for that. Instead, he used more than 5,700 bones to build a structure that has become known worldwide as the Fossil Cabin. The historic Fossil Cabin was built in 1932 and stands about five miles east of Medicine Bow, Carbon County, Wyo. The cabin has been featured in Ripley’s Believe It or Not! and is listed on the National Register of Historic Places.

Legend Rock, about 30 miles northwest of Thermopolis, Wyo., features nearly 300 images carved or pecked into a rock cliff by ancient peoples over thousands of years.