Mr. Stewart appeared on three documented Martha Deane shows as discussed in Jimmy Stewart on the Air. None of the shows is available.
The host of the Martha Deane Show was actually Marian Young Taylor. She hosted the show for 32 years on WOR-AM, in Manhattan. Her announcer was George Hogan.
Stewart’s final appearance on the program came on May 19, 1949. On that day, the New York Times had this listing:
He most likely was there to promote his new film, The Stratton Story, which had premiered the previous week.