Even though they play two of the "old men" lexicographers, Leonid Kinskey (Prof. Quintana) and Richard Haydn (Prof. Oddly) were both under 40 years old when they made this movie and, therefore, younger than Gary Cooper.
Lucille Ball was set to play Katherine 'Sugarpuss' O'Shea, but once producer Samuel Goldwyn found out that Barbara Stanwyck was available he gave her the part instead.
In the car fleeing the nightclub: Sugarpuss O'Shea holds up Professor Potts's calling card to read it. Then the camera angle goes to a close-up of the card, with her fingers holding it around the four corners of the card, but the position of the fingers in the close-up shot do not at all match the way she is holding the card in the previous "long" shot.
What was the title of Howard Hawks' musical remake of this film?
A
Ball of Fire's director, Howard Hawks, remade the film as A Song is Born," starring Danny Kaye and Virginia Mayo, and featuring the Benny Goodman and Tommy Dorsey Orchestras.