When completed in June 1909 on the North Platte River, 47 miles southwest of Casper, the granite Pathfinder Dam was a triumph of early 20th century design. It was one of the earliest federal Reclamation Service dams in the West, and convinced agency officials of their ability “to do great things.”

Park County, Wyo., was officially formed in 1909, but settlers began arriving in the area much earlier and creating several communities that are well-known today. Cody, the county seat, was named for Col. William F. “Buffalo Bill” Cody of Wild West fame, who promoted nearby Yellowstone National Park—founded in 1872—as a “Wonderland.” The Pitchfork Ranch near Meeteetse, one of the oldest ranches in the region, was founded in 1879. Dude ranching began in the early 1900s, early oil discoveries came soon afterward, and tourism and oil and gas continue as mainstays today. In the mid-1940s, the Heart Mountain Relocation Camp, where many Japanese-American families were interned during World War II, was located between Cody and Powell.

Mike Sullivan practiced law with the firm of Brown, Drew, Apostolos, Massey, and Sullivan for twenty years and then ran for Governor in 1986. Governor Sullivan won the election and took office on January 7, 1987.

Milward Simpson also served on the University of Wyoming Board of Trustees from 1939 until 1954 when he was elected Governor.

Since prehistoric times, people’s lifestyles in what became Natrona County have depended on their livelihoods. Casper was founded in 1888, and county was formed in 1890, shortly before Wyoming became a state. First cattle, then sheep and after 1910, the oil and refining business dominated. An Army Air Corps training base near Casper brought another boost in World War II. Casper College was founded in 1945. Since then, the county has continued to ride the booms and busts of the energy business, but with cultural, health-care and education opportunities growing all the while.

Nellie Tayloe Ross won an election to replace her late husband and became the first woman governor in the United States. Governor Ross survived several challenges to her authority, some of which started with her first days in office.

Nels Smith was elected Governor in November 1938 and served until 1943. he was Defeated during his bid for reelection.

Newcastle, Wyo., on the edge of the Black Hills, was founded in 1889 when the Chicago, Burlington and Quincy Railroad arrived in northeastern Wyoming. Newcastle sprang up where a spur left the main line of the Burlington to head seven miles northwest to the coal mines at Cambria. The Burlington –now, after its merger with the Santa Fe Railroad, the BNSF—is still a major employer, along with a local oil refinery, hospital and school district, and businesses that serve tourists.

The history of Niobrara County, Wyo., organized in 1913 and Wyoming’s smallest by population, includes early-day dinosaur discoveries, successful oil drilling and agricultural activities. The county seat, Lusk, earned that status only after extended controversy. The Wyoming Women’s Center, the state’s only prison for women, is located in Lusk.

Elwood Mead was only 30 in 1888 when Territorial Gov. Thomas Moonlight hired him to bring order to Wyoming’s water law. As territorial engineer Mead did just that, and his ideas were written into the state constitution adopted in 1890. Mead spent only 11 years in Wyoming, but all his life carried with him what he learned in the state.