Here is a link to the 1951 recording made for the Seattle Centennial series Their Name Was Courage which is a dramatization of the colonization of the Seattle region.
https://soundcloud.com/paul-nunn-604692201/their-name-was-courage-blackie-of-naches-valley
In this mildly unsettling story, Blackie was an oxen who was befriended by a child character in the story only later to be killed to turn its skin into robe to lower a wagon down a cliff.