[2] After he was cast in the 1923 production of The Deerslayer, he remained in California and coached football at Glendale High School (one of his players was John Wayne).

[citation needed] Pierce's life changed when he attended a party given by Edgar Rice Burroughs and his daughter Joan.

[3] Pierce played Prince Thun of the Lion Men in the 1936 serial film Flash Gordon.

He acted in small roles in several films, mostly westerns, through 1951, and worked in a real estate agency in the San Fernando Valley.

[5] For many years, near the end of his life, Pierce attempted, to no avail, to find a print of Tarzan and the Golden Lion, which was thought lost.