Stephen Zimmer comes from four generations of West Texas cattle ranchers. Beginning in 1976 he spent twenty-five years as Director of Museums at New Mexico's Philmont Scout Ranch. He has been studying the history of the New Mexico cattle frontier for more than thirty years. He has driven through or ridden horseback in all kinds of weather over the land where outfits ran cattle in the last decades of the 19th century in order to better understand what life was like for the men and women who worked the range. He lives outside of Cimarron, New Mexico on his Double Z Bar Ranch where he writes about western art and cowboy life. His articles have appeared in Cowboy Magazine, Western Horseman, New Mexico Magazine, and Wild West among others. Parker's Colt: A Novel of New Mexico Ranch Life and Cowboy Days, Stories of the New Mexico Range, were also published by Sunstone Press.