Originally Posted by pdurrant
But as the author died on 21 December 1940 (Exactly 72 years before the end of the world
), it's been out of copyright in life+70 countries since 1st January 2011, and in life+50 countries (like Canada) since 1st January 1991.
In the US it's cover under the 1998 Sonny Bono copyright extension act which is what extends things to 2021. Not sure about someplace like the UK, would it be a straight life plus 70 or do they have agreements that recognise the longer copyright in the US? IIRC we won't see anything new enter the PD in the US until around 2019 or something like that.