Black Hills Duel — Owen Rountree

THEY HIRED CORD AND CHI TO PROTECT THE GOLD.
Now the freedom-loving outlaw and his tough lady partner must fight for their lives.
A hardscrabble Dakotas mining town struggles to keep its glittering payload from the murderous grasp of thieving road agents.
And that, by luck, is where Cord and Chi come riding in.
But they do their job so well that the locals force Cord into a high-stakes showdown with notorious gunslinger Cash Culhane -- in a duel to the death that neither renegade wants!

Owen Rountree was the pseudonym of two writers, Steven Mark Krauzer (1948-2009), and William Kittredge (1932 - ).
Krauzer was a prolific writer from Missoula, Montana. His aliases included ‘Jokemeisters', Johnny Dee and the house-name Terry Nelsen Bonner, whose pseudonym appeared on the ‘Making of Australia' series. He wrote several early Mack Bolan ‘Executioner' novels, including Double Crossfire and Terrorist Summit, the Blaze series as J. W. Baron and the Dennison's War series under the name ‘Adam Lassiter'. He also wrote two motion pictures, Cocaine Wars in 1985, and Sweet Revenge two years later.
William Kittredge is an American writer from Oregon. He grew up in Southeastern Oregon's Warner Valley in Lake County, where he attended school in Adel, Oregon, and later, high school in California and Oregon. He has received numerous awards including a Stegner Fellowship at Stanford, and Writing Fellowships from the National Endowment for the Arts. With Annick Smith, he edited The Last Best Place: A Montana Anthology. A prolific anthologist, Kittredge has also written a great deal of nonfiction.