- Claudette Colbert was originally cast to play Mary. Days before production began, Frank Capra fired her from the film because she refused to work into the evening. Capra then hired Katharine Hepburn after Spencer Tracy suggested her.
- 'Cooper, Gary' was originally chosen for the role of Grant Matthews.
- Katharine Hepburn, Adolphe Menjou, and George Folsey's names are misspelled in the opening credits because the distribution rights were originally owned by MGM, but only for seven years. The rights were then sold to another company who had to create their own opening credits.
- Although practically the entire cast and production staff were under contract to M-G-M, the film as seen today does not open with Leo the Lion roaring and the credit "Metro-Goldwyn-Mayer presents". It opens with the Liberty Bell clanging and the credit "Liberty Films presents".
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