The Gunfighter turned it down, despite having expressed a strong desire to play the part, because of his longstanding hatred for Columbia's president, Harry Cohn. Columbia sold the rights to Twentieth Century Fox, where the role went to Peck. Wayne's final film, "The Shootist" (1976), is often compared to "The Gunfighter" and contains numerous plot similarities. The script was loosely based on the purported exploits of an actual western gunfighter named Johnny Ringo, a distant cousin of the outlaw Younger family and a purported survivor of the infamous gunfight at the OK Corral against Doc Holliday and the Earp brothers. As in
Wyatt Earp use Frank Waters' "Earp Brothers of Tombstone", as their primary source for material that presents Wyatt Earp as something of a villainous monster, aided and abetted by his brothers who were almost brutes. Waters detested the Earps so badly that he presented a book that was terribly flawed, poorly edited, and brimming with prevarications. In his other work, Waters is poetic. In the "Earp Brothers of Tombstone", he is little more than a tabloid hack, trying to slander someone he dislikes. To date, no reason has been uncovered for the bias Frank Waters exhibited against Wyatt Earp and his brothers.