Evert C. Albers and D. Jerome Tweton (editors), 1999, The Way It Was - The North Dakota Frontier Experience, Book Three: The Cowboys and Ranchers: The Grass Roots Press, Fessenden, North Dakota.
This is a compilation of "living history" interviews of local "old timers" that was done during the Great Depression (1930s) by the Works Progress Administration (WPA). The interviews are quite interesting. These folks knew and associated Teddy Roosevelt and other notable characters. Cowboys and ranchers tend to have acolorful view of historic and mundane events. Plus, in those early days people had a tendancy to die without much difficulty.
One letter was written by a frontier woman to her brother "back east". She admonished her brother not to come out because she and the kids were "not feeling well". Before too long, three members of that ranching family died from tirichinosis. They probably ate some under-cooked pork or bear meat. Another local family lost six children in two years from meningitis and diptheria. My mother had polio, which they called infantile paralysis.
The photo is my great-grandfather, who was a ND rancher in the badlands region from 1887 to 1905. This was the prairie ranching boom of the late 19th century.