"The Hedda Hopper Show - This Is Hollywood" broadcast a 30 minute radio adaptation of the movie on April 5, 1947 with John Wayne reprising his film role.
John Wayne would later star in two films where his eponymous character carried the name of characters from this movie: Hondo and McLintock!.
Quirt Evans is treated with laudanum while recovering at the Worth house from his injuries. He is treated with laudanum again in The Shootist as J.B. Books to reduce his pain from the effects of cancer.
The first film produced by John Wayne.
The passage Randy reads from Quirt's Bible is from either 2 Samuel 23:20-1 or 1 Chronicles 11:22-3.