The radio truck used in the film was borrowed from RKO cinematographer J. Roy Hunt, who had built it for his own use.
The United States Bullion Depository--as it is officially named--at Fort Knox, KY,, was brand-new at the time of this film, having been completed in December 1936, with the first gold shipments occurring from January to July 1937. It was made necessary due to President Franklin D. Roosevelt's Executive Order in 1933 that made it illegal for US citizens to own gold coins, bullion or gold certificates. All of that gold had to be turned into the federal government, increasing its stockpile from $4 billion to $12 billion in the span of four years. This order was not repealed until 1974. NOTE: This was the first feature film production allowed on the grounds of the Depository.
Mary drives a 1936-7 Cord 810/812 cabriolet. It is a classic of Art Deco automotive design. Less than 3,000 were made. As of 2018 these automobiles could sell for well over $100,000.
In the opening scene where Mary tries to sabotage Eddie's broadcast, she uses the term 'fake news' - a term which in those days was not unknown, but not the cliché it has become in the 21st century. Eddie's broadcast, of course, is on the level, and the charge of 'fake news' is, in this context, fake news itself, an early dramatic example of the term being used to discredit a true story.
Ada Leonard's debut.