Here is another radio appearance discovered after the publication of Jimmy Stewart on the Air. On March 4, 1947, Jimmy Stewart and Frank Capra were in Beaumont, TX, for the Texas premiere of It’s a Wonderful Life. As a part of their visit, they were interviewed by R.J. O’Donnell of the Interstate Circuit. That interview was broadcast over Dallas radio station KGKO.
Coverage of the event was published in the March 5, 1947, edition of Motion Picture Daily: