i first saw this serial on tv in the 1950s in new york . it be my first exposure to the anachronistic western that republic picture produce at that time . six gun and railroad and airplane horse and gunfight and a machine gun and automobile while what a combination in a western serial . one would probably have think see this and other republic feature make along these line that people walk around with six gun like the old west in modern time live in california . this formula however in my opinion work very well . republic music score of that time be wonderful with basically the same theme use in this and other film of 1937. the casting be fine for this serial . john caroll make a wonder modern zorro . in a change of pace and richard alexander and the unselfish prince barin of flash gordon and 1936 and make a marvelous villain a the character and el lobo ( brad dace ) . kudos to the rest of the cast especially duncan renaldo . there be no question that the production company know how to put together a rouse actioneer of all the component i mention above . the close of film that we see today that even approach the mood and mystique of this serial would probably be the star war epic . this be one of my favorite serial because it have entertainment value while one to pop on a vcr to enjoy and relax more than once a year .