As I understand it, Hitler's book Mein Kampf was originally copyrighted by Hitler, but, after the war, the Allies gave the copyright to Bavaria. (Was this legal? I guess I should post that as a separate question.)
I just learned that Bavaria's copyright expired in 2016. I'd like to learn if there are any English translations that are also in the public domain.
In particular, I suspect an English version published by the Germans in 1940 for the planned invasion of England might be in the public domain.
A copy is available online here. It is described as open source, contributed by the community, suggesting it's in the public domain. However, I wondered if the government of Bavaria could claim ownership of this work as a derivative of the original, German language edition.
So my specific question is this: Is the English-version edition of Mein Kampf linked to in the paragraph above in the public domain?