> Copyright, at least in the U.S., is automatic. It is now, but back then a work was public domain if released without a valid copyright notice. Charade, a 19

> Copyright, at least in the U.S., is automatic. It is now, but back then a work was public domain if released without a valid copyright notice. Charade, a 1963 film, entered the public domain immediately on release. https://en.wikipedia.org/wiki/Charade_(1963_film)#Public-domain_status https://en.wikipedia.org/wiki/Charade_(1963_film)#Public-dom...