Yellowstone, the world’s first national park, covers 3,500 square miles in Wyoming’s northwest corner and extends a short distance into Idaho and Montana. Established in 1872, the park continues to enthrall visitors to its striking scenery, topography, plentiful wildlife and thrilling thermal features.

Fort Phil Kearny, near present-day Story, Wyo., was established by the U.S. Army in the summer of 1866 to protect travelers on the Bozeman Trail from Indian attack. and abandoned two years later, under terms of the1868 Treaty of Fort Laramie. Indians burned the fort shortly after the army left.

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.

Uinta County, one of the five counties of Wyoming Territory, was reduced to its present size in 1911. The Oregon, California, Mormon and Overland trails all passed through the county as well as the Union Pacific Railroad, the Lincoln Highway and Interstate 80. While the county is rich in natural resources like coal and oil and endures economic booms and busts as a result, agriculture continues to be a mainstay. Rancher John Myers established the first ranch on the Bear River drainage in 1858 and filed the first water right in what later became Wyoming Territory.

The Tongue River in northern Wyoming must have been as beautiful as it is now when George Bent saw it in 1865, with big, lazy curves under cottonwoods, the grass thickening on its banks and the trees sending out their first green shoots in early May. Nowadays, irrigated hay fields and the tiny towns of Dayton and Ranchester lie along the river. In May of 1865, however, one stretch of it was packed with human beings. That month, there was as large a town on the Tongue as that river has ever seen.

Businessman, family man, territorial and state governor, U.S. Senator: Francis E. Warren succeeded in all of these roles, but he is best known for long service in the U.S. Senate on behalf of Wyoming. A Massachusetts native, Warren arrived in Cheyenne in 1868, when the city was still a mass of tents and other temporary structures, and quickly became involved in its business and politics. By around 1900 he was Wyoming’s most powerful Republican, and ran his party’s so-called Warren Machine for decades by patronage and pork-barrel politics.

Gerry Spence, born, reared and educated in Wyoming, is recognized nationwide for his powerful courtroom victories.

On Wyoming’s border with Nebraska, Goshen County and its economy have long been stabilized by farming and ranching. Today, sugar beets and cattle are the main products. The area is traversed by the Oregon Trail and the North Platte River, is the home of Fort Laramie, and was well known to Euro-Americans by the 1830s. The Burlington Railroad arrived in 1900 and a Union Pacific line in the early 1920s, both providing impetus to the birth of many small towns, a few of which survive and thrive. Goshen County now supports a population of about 13,500.

The vivid, charismatic J. B. Okie raised sheep near Badwater Creek at the turn of the last century, and was so successful he was called “Sheep King.” A businessman with great vision, he soon owned half a dozen stores in small towns in central Wyoming, and eventually an equal number in Mexico. Lost Cabin, Wyo., named for the legendary Lost Cabin Mine, was his base. Okie built an opulent mansion there, a big bunkhouse for employees, bungalows for guests, an office building, a roller rink, a golf course and an aviary full of birds of paradise (left), cockatoos and macaws.

Wiliam Ross worked his way from prosecuting attorney of Laramie County to the nomination for Governor on the Democratic Party's ticket. He died in his office and his wife was elected to take his place.