 Those were the only two Republic serials released in 1953, although the studio did re-release "Adventures of Captain Marvel" (as "Return of Captain Marvel") and "Captain America" (as "Return of Captain America") to pad out their release schedule, not to mention the serial "", which was originally intended to be a television series.Though filmed entirely in the United States, early chapters in "Canadian Mounties vs. Atomic Invaders" are set in a snowy region of northern Canada referred to as Taniak and rely heavily on the use of footage from earlier Republic productions including the 1938 feature "Call of the Yukon" and serials "King of the Royal Mounted" and "King of the Mounties".These are blended with rear projection scenes featuring the serial's cast on studio sets and a "snow-dressed" Republic backlot.