Although the onscreen credits list the writing source as a novel, no record of its publication has been found.
Some cast members in studio records/casting call lists did not appear or were not identifiable in the movie. These were (with their character names, if any): William Ricciardi (Kitchen boss), C. Henry Gordon (Head waiter), John Marston (Bilkerston), 'Maurice Black' (Cafe manager) and Yola d'Avril.