The classic film Casablanca marks its 75th birthday this year. One little known fact? Humphrey Bogart was shorter than Ingrid Bergman, so he had to stand on a box during filming. Warner Bros./AP hide caption toggle caption Warner Bros./AP Movie Interviews After 75 Years, Here's Looking At You, 'Casablanca' February 24, 2017 Did you know Humphrey Bogart had to stand on a box for scenes with tall Ingrid Bergman? NPR's Susan Stamberg visited the sound stage where the 1942 classic was filmed — and returned with stories. After 75 Years, Here's Looking At You, 'Casablanca' Audio will be available later today.