Early Wyoming was seen as a hardscrabble place. But after 1900, dude ranches showed off Wyoming’s mountain scenery, fishing, hunting and hospitality, and thanks to the elite guests’ taste-making powers, Wyoming and the West became associated less with cold wind and distance and more with romantic glories.

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.

Alcova Dam, a Bureau of Reclamation project, was completed in 1937. The reservoir opened in 1938 and a power plant was completed in 1955. The $20 million dam project didn’t achieve the high expectations of immense wealth that were forecast at the time of its inception, but continues to provide irrigation water for farmers and ranchers and generates hydropower for the area. Alcova Reservoir offers fishing, boating, camping and swimming opportunities for visitors.

Guernsey Dam on the North Platte River lies between historic Fort Laramie and Laramie peak and just a few miles from some deep, sandstone ruts on the historic Oregon Trail. The dam was completed in 1927, for hydropower and flood control. In 1934, crews from the Civilian Conservation Corps located camps near the reservoir. With design help from the National Park Service, they built the handsome stone-and-timber shelters and buildings at Guernsey State Park, in what became a showplace of state park design.

Largely forgotten today is the stiff local resistance that arose in Jackson Hole, Wyoming, to the creation and later the expansion of a national park there. The story covers 31 years of controversy, and includes a Rockefeller, a movie actor and a group of armed ranchers trailing cattle illegally across a national monument, and some of the most beautiful scenery in North America.