"The Dayes of Wyoming" is an anthology of seven historic novellas featuring horse trainer, Bertha and mountain man, Charlie Daye. The stories take place during the late 1800s to early 1900s in northern Wyoming, from Johnson County, east of the Bighorns, to Yellowstone, west of the Continental Divide.

This was an exciting time of change in Wyoming: Wyoming Territory was admitted into the Union; the end of the trappers' rendezvous precipitated a decline in the fur trade and mountain men; Wyoming's Civil War took place east of the Bighorns in Johnson County; with Yellowstone recently declared a national park, Cody became a thriving community as its eastern entrance; and work began on the Shoshone Dam, later known as the Buffalo Bill Dam and Reservoir. Hundreds of thousands of bison no longer dotted the Wyoming landscape and their disappearance was soon followed by the extinction of wolves and severely diminished herds of wild mustangs.

Bertha and Charlie Daye experienced it all, and more . . . from guiding eastern guests into remote mountain paradise, rounding up wild horses, and riding in thrilling overland horse races, to adopting children traveling west on one of the famous Orphan Trains.

Harper's New Monthly Magazine, August 1873, praised the "placing-out system" of the Children's Aid Society in New York as "an ingenious effort for the benefit of the destitute children of the city."