As part of a display on telephones and communication, the Smithsonian Institute used a clip of Lou Costello trying to call in for the radio contest to demonstrate the mechanics of placing a call with an operator-run exchange.
During the scene in which Lou Costello is "interrogating" the radio show cast, he blurts out the question, "Where were you on the night of January 16th?". This is reference to the famous Broadway play of the same name by Ayn Rand, the Russian-born novelist and philosopher who wrote "The Fountainhead" and "Atlas Shrugged". "The Night of January 16th" was also made into a movie in 1941.
Radio actor Walter Tetley, who plays the elevator operator who perpetually gets the best of Lou Costello in this film, would go on to become the voice of "Sherman" in the "Mr. Peabody" cartoons in The Adventures of Rocky & Bullwinkle.
The "watts-volts" routine was not in the script. It was created by Bud Abbott and Lou Costello on the set.
This was the first Bud Abbott and Lou Costello film that did not contain musical numbers. As a result, it was shortest film that they had made to date.