Glenn Ohrlin, 1973, "The Hell-Bound Train, A Cowboy Songbook," Univ. Illinois Press, p. 45-46:
"Another song from my earliest working days is "Cowboy's Life" (also known as "The Tenderfoot" and "The Horse Wrangler").... The verses first appeared as a poem entitled "D2 Horse Wrangler" in a livestock journal printed in Miles City, Montana. It was written by cowboy poet D. J. O'Malley." The melody used by Ohrlin is given, pp. 45-46.