In 1885, long before he was known as the Father of the National Park System, naturalist John Muir first visited Yellowstone. The sojourn matured him as a writer and thinker, gradually articulating the idea that nature was worth protecting not merely for its resources—but for its holistic self.  

Just before sunset, on Oct. 31, 1903, a sheriff’s posse and a band of Oglala Sioux families from the Pine Ridge Reservation engaged in a brief, sharp gunfight near Lightning Creek, northeast of Douglas, Wyo. Seven people died, and a U.S. Senate investigation followed.

Alfred Corum, bound for California in 1849 with two dozen other Missouri men, died on July 4 on the Sublette Cutoff in present western Wyoming. His brother and five other men stayed behind to bury him, deeply saddened on what otherwise would have been a day of celebration. 

Emigrant Spring, west of the Green River on the Slate Creek Cutoff of the Oregon Trail, offered pioneer travelers cold, clear water, plentiful grass for their livestock and plenty of sagebrush for their cooking fires. And the sandstone bluffs above the spring made a natural bulletin board where thousands carved their names.

In the spring of 1878, about 950 Northern Arapaho people arrived with a military escort on the Eastern Shoshone Reservation in the Wind River Valley in central Wyoming Territory. The two tribes had been in open warfare as recently as four years before, and bad feelings lingered between them.

On the Oregon-California Trail in western Wyoming lies the grave of 20-year-old Nancy Hill, who died of cholera while bound for California in 1852. The gravestone, though old, is not original and part of the inscription—“Killed by Indians—” for many years misled locals about the cause of her death.

When troops of the U.S. 11th Infantry arrived at their new post, Fort D.A. Russell, near Cheyenne, Wyo., in 1904, they brought with them two church bells—war trophies of recent bitter fighting in the Philippines. The Bells of Balangiga still stand at F.E. Warren Air Force Base. 

In the 1860s, the Eastern Shoshone people signed two treaties with the U.S. government. The first set aside vast holdings for them. Just five years later, as the transcontinental railroad was approaching, a second treaty established a Shoshone reservation in the Wind River valley—with less than a tenth the earlier amount of land.

In 1843, Oregon Trail diarist John Boardman was probably the first to make reference Church Butte near present Granger, Wyo., calling it “Solomon’s Temple.” In the 1850s, most emigrants referred to the landmark as Church Butte, because of its shape and perhaps because Mormon companies held religious services there on their way to the Salt Lake Valley. 

Oregon/California Trail travelers crossing Ham’s Fork in what’s now southwest Wyoming noted a stream that was sometimes low, sometimes dangerously high, ferries run by interesting characters and a stage station so full of flies that they “darkened the table and covered everything put upon it.”