The amazing sight of Ayres Natural Bridge, a natural limestone arch across La Prele Creek near Douglas, Wyo., inspired numerous Oregon Trail emigrants to comment in their diaries. California-bound Cephas Arms on July 4, 1849, described it as “one of the wildest scenes I ever beheld.”

About 70 miles northwest of Fort Laramie, the Oregon Trail crossed La Prele Creek, flowing north from the Laramie Range toward the North Platte River a few miles away. On a high bluff above the creek mouth the U.S. Army in 1867 would build Fort Fetterman, which became an important supply base in the wars with the Cheyenne and Lakota Sioux in the following decade.

In December 1892, newly elected Gov. John E. Osborne, a Democrat, took office a month early in a storm of controversy. State politics were still reeling from the Johnson County War and the 1893 Legislature, in an uproar, failed to elect a U.S. senator.

Mathew Campfield, African-American Union Army veteran, worked as a barber and was elected coroner of Natrona County, Wyo., in the early 1890s. Decades earlier, he froze both feet when he lived in Kansas and ever afterward walked on wooden ones. His Army pension records reveal a great deal about his life. 

Tracy McCraken borrowed $3,000 in 1926 to purchase the Cheyenne-based Wyoming Eagle. With a media empire that came to include newspapers in Cheyenne, Laramie, Rawlins, Rock Springs and Worland, plus TV and radio, he played a big role in 20th century Wyoming politics—and prospered.

In July 1864, several members of the Kelly-Larimer wagon train were killed by a large party of Oglala Sioux. The graves of five victims—7-year-old Mary Kelly and four men—are located near present Glenrock, Wyo. Fanny Kelly, held captive by the Sioux, later wrote a book about her trials.

Three-year-old Ada Magill of Kansas, died of dysentery in 1864 on the Oregon Trail west of present Glenrock, Wyo. The Magills were bound for Oregon. In 1912, road surveyor L. C. Bishop moved the grave to a site nearby, where it is now marked by the Oregon-California Trails Association.

At Red Buttes, west of present Casper, Wyo., Oregon Trail travelers left the North Platte River and started for the Sweetwater and the Continental Divide. Long a boundary marker for tribes, the spot quickly became well known to emigrants for its beauty and for marking a new stage of the journey.

When pilots on United Airlines Flight 409 took a shortcut in bad weather en route from Denver to Salt Lake City in October 1955, the plane crashed into Medicine Bow Peak and 66 people died. It was the worst airline disaster up to that time, and its cause is still unknown.

In 1988, following extensive research regarding her identity, 1852 Oregon Trail traveler Quintina Snodderly’s remains were re-interred where they had been found in 1974 on private land east of present Casper, Wyo., as part of the Oregon-California Trails Association project to preserve graves of trail travelers.