Louise Brooks made 24 movies, contrary to the 25 stated in the film. Incorrectly regarded as goof: Actually, she made 25 if you count the silent documentary "A Trip Through the Paramount Studio" (1927).
There is a questionable picture of Louise Brooks as a child with bangs. There are discrepancies on whether or not it is actually her.
Walter Wanger was mispronounced throughout the film. After watching many interviews, the team realized Wanger is pronounced "Wanjer"