I thought today would the public domain day for the Wilhelm-Baynes translation of the Yi Jing (Book of Changes). According to https://fairuse.stanford.edu/overview/public-domain/welcome/, no.

The first edition was published 1950.

I hear two different stories. It's 70 years after date of publishing, other times it's 70 years after date of the last surviving author.

But - the translator Cary F Baynes, died 1977. https://trove.nla.gov.au/work/32102443?q&versionId=38994288

Does that mean Jan 1st, 2048 is the year the book would be public domain?

Aside: Cary F. Baynes was a student of Carl Jung. I didn't know that until now. Jung did a preface to the english translation of Wilhelm's Yi Jing.