Toomey’s Mills in Newcastle, Wyo., began operations as Newcastle Milling Company and Electrical Light Plant in 1905, producing flour by day and generating electricity at night. In 1919, D. J. Toomey purchased the business and it remained in the family until 1965. In 1974, new owners converted it into a restaurant, the Old Mill Inn. In 1995, current owners, Doug and Larita Brown bought the property, which is listed in the National Register of Historic Places, in 1995.

The Crow Creek or Cole Ranch northwest of Cheyenne, Wyo. was founded in 1879 and operated until 1972, when the land was subdivided. The ranch headquarters is listed on the National Register of Historic Places. On the ranch, cattle grazed native grasses during the warmer months and alfalfa hay in the winter; later, the Coles added dairy cattle. Historic structures include the ranch house, barn, bunkhouse and corrals.

Wyoming’s first state prison was located in Rawlins, Wyo., and housed inmates for 80 years, beginning in 1901. In 1988, a joint powers board turned the abandoned building into a museum and renamed it the Wyoming Frontier Prison. Visitors today can tour the cells and see the grounds where 13,500 prisoners, including 11 women, served time.

As many as half a million people crossed what’s now Wyoming in the mid-19th century before the transcontinental railroad was built. Their trails followed the North Platte and Sweetwater rivers west to South Pass, after which they divided into various routes bound for Oregon, Utah or California. They were making the journey of a lifetime, on routes blazed by Indians and trappers, and then worn deep and wide by thousands of wagons and perhaps millions of draft animals. These trails remain largely unchanged in Wyoming. Their white-topped wagons still hold an important place in the national imagination.

Trail End, the mansion home of cattleman, banker and politician John B. Kendrick, was completed on a hilltop overlooking Sheridan, Wyo. in 1913, 16 months before Kendrick was elected governor. Kendrick later served three terms in the U.S. Senate and died in 1933. The Kendrick family continued to use the house until 1961. In 1968, the Sheridan County Historical Society bought the building, and in 1982 transferred ownership to the state, which operates the 14,000-square-foot mansion now as a state historic site.

Cody, Wyoming, was founded in 1896 by investors including Buffalo Bill Cody who had high hopes for prosperity thanks to local irrigation, great scenery, and nearby Yellowstone National Park. Prosperity finally arrived early in the 20th century with the Burlington Railroad and, eight miles away, the federally financed Buffalo Bill Dam. Cody remains one of Wyoming’s premier tourist towns.

Alonzo Clark was elected to the office Secretary of State in November of 1926 and served two terms. He took office as acting Governor to complete the first half of the late Governor Emerson's term.

Home to 19 of Wyoming’s first families, the Historic Governor’s Mansion was occupied from 1904 through 1976, opened to the public in 1977 and extensively renovated in 2004.

The history of nuclear weapons in Wyoming is intimately connected to the F. E. Warren Air Force Base, which in turn is tied to the global development of rocketry and nuclear might. If Wyoming were a nation, Warren AFB in Cheyenne would make it one of the world’s major nuclear powers. Its history with nuclear weapons in Wyoming is tied closely to the worldwide tensions of the Cold War, and with the development of missile-based nuclear weapons systems.

The story of uranium in Wyoming is a high-stakes drama whose cast includes fever-driven prospectors, ranchers defending their property rights, government officials intent on national security, entrepreneurs, engineers and world-class mining companies.