In 1903, President Theodore Roosevelt included Wyoming in his 25-state tour of the western United States. He spent nearly three weeks in Yellowstone National Park, gave a speech in Newcastle, and on the return leg from California, left the train long enough for a well-publicized horseback ride from Laramie to Cheyenne, and two extra days politicking and socializing in Wyoming’s capital.

As the beaver trade waned in the 1830s, so did economic reasons for an American toehold in the Oregon country, still under joint British-American occupancy. Religion shifted the balance of power, however, when American Protestant missionaries crossed the Rocky Mountains with an eye toward converting the tribes of the Northwest. Soon these men brought their wives with them as well. In 1836, Narcissa Whitman and Eliza Spalding were the first Euro-American women to cross South Pass, and these people became the vanguard of American settlement of Oregon.

The T Cross Ranch north of Dubois, Wyo., on Horse Creek in the Absaroka Mountains was first homesteaded around 1900 by Ernest O. Hadden. In 1919, Henry Seipt acquired the property, named it “The Hermitage” and operated a dude ranch here. Robert Cox became the owner in 1929 and changed the name to “T Cross Ranch,” but continued the dude ranch. The ranch is listed on the National Register of Historic Places and is still operated as a dude ranch.

Sweetwater County’s history is as rich and diverse as its mineral wealth and population. The area became a transportation pathway, with the early pioneer trails and the transcontinental railroad and today’s Interstate 80 serving as important trade and travel routes. Mining of coal and trona and the production of oil and natural gas have been and continue to be significant industries, contributing to the county’s economic wealth and to Sweetwater County’s position as one of the top three revenue producing counties in Wyoming.

Euro-Americans first described what’s now Sublette County in western Wyoming early in the 1800s, when it was a hub for the Rocky Mountain fur trade. Cattle ranchers followed the fur trappers. Soon, tie hacks arrived to cut timber for railroad ties. The county’s first successful oil well was drilled in 1907, and oil and gas have been important to the county ever since. In the early 1990s one of the world’s largest gas fields was discovered south of Pinedale, the county seat. County residents continue to work to balance energy booms with the conservation measures needed to keep life good and to keep tourists coming back.

Wind is constant in Wyoming, but ways of harnessing its power have changed substantially over time, from wooden windmills pumping water for railroads and livestock, through small, wind-charged battery plants on 1920s ranches to the huge wind turbines spiking our skylines today.

When the U.S. Army in 1866 sent troops to build a string of forts along the Bozeman Trail north from the North Platte River to the Montana gold fields, Lakota, Cheyenne and Arapaho tribes in that country reacted angrily. For two years, the tribes harassed and attacked the soldiers and travelers on the trail. After the Treaty of Fort Laramie in 1868, the Army withdrew, the Indians burnt the forts and for a few years, until hostilities started up again in the mid-1870s, the tribes the country largely to themselves.

Stephen Wheeler Downey was a prominent Laramie lawyer active in public life in Wyoming for more than 30 years beginning in 1869. He served in the territorial and state legislatures where he was an early supporter of votes for women and introduced legislation to found the university of Wyoming. He served in the U.S. Congress as Wyoming’s territorial delegate, as a member of the convention that drew up the state constitution in 1889, as president of the University of Wyoming trustees, and, at the beginning and end of his career, as Albany County’s prosecuting attorney. He died in 1902 and is buried in Laramie.

Stanley Hathaway was elected to two terms as Governor in 1966 and 1970. Appointed Secretary of the Interior by President Ford in June 1975, Hathaway resigned the next month due to ill health.

Noted western historian Will Bagley, drawing on the work of Pulitzer-Prize-winning author and conservationist Wallace Stegner, offers a passionate plea for the preservation of South Pass, a crucial site for the hundreds of thousands of people who traveled the Oregon, California and Mormon trails.