Final film of Jane Bryan (Kate). She retired from acting shortly after her marriage to devote herself to an industrialist Justin Dart, and they was happily married until his death in 1984.
Characters in the story refer to "Sesquicentennial." While the film was being shot in 1939, the United States was observing its Sesquicentennial, or 150th anniversary, since the establishment of the country when the federal government began operations in 1789.
Three cast members in studio records/casting call lists did not appear or were not identifiable in the movie. These were (with their character names): Henry O'Neill (Colonel Ramm), Harlan Briggs (Pierce) and Ed Parker (Fireman).
In some studio-prepared newspaper ad mats, the film is titled "BROTHER RAT AND THE BABY."