The location filming at the end of the movie (the film on which Skipper is a laborer) is being done at Copper Creek, a tributary of the Klamath River, which runs primarily through Trinity County, California. The location is called "Copper River" in the film; though it is technically called Copper Creek in reality. Sometimes the creek does get called Copper River by some.
The prison set where Bob and Skipper perform the staged fight is the reformatory built for The Godless Girl (1928).
Bob's fall away from the camera and into the burning building was the same shot as Kong dropping the "wrong woman" from the apartment in "King Kong". Vernon Walker. worked on the special effects in both films.
Bruce Cabot has only one line: "Well, fifty bucks is fifty bucks." He would do a little better that year with "King Kong".