Both Pandora's Box and Diary of a Lost Girl were censored in Germany - the country were they were made. This is documented in the biography by Barry Paris. What's less known is that a number of her other films were also censored in other parts of Europe as well in the United States.
My great good friend Gianluca Chiovelli, Italy's best Louise Brooks fan and her number one researcher there, has uncovered Italian censorship of Brooks' films during the Fascist era. He emailed me with what he found. Gianluca wrote, "Go to http://www.italiataglia.it/search and type the Italian title of Brooks' films."
Trionfo di Venere (American Venus)
Un barbiere di qualità (A Social Celebrity)
Signore della notte (Evening Clothes)
Aviatori per forza (Now We're in the Air)
Capitan Barbableu (A Girl in Every Port)
Miss Europa (Prix de Beaute)
Amanti di domani (When You’re in Love)