In the US, a random/personal selection of major works that will be public domain are:

* Ernest Hemingway's novel "A Farewell to Arms"

* Ludwig Wittgenstein's essay "Some Remarks on Logical Form"

* The first part of the 14th edition of Encyclopædia Britannica

* William Faulkner's novel "The Sound and the Fury"

* René Magritte's painting "The Treachery of Images"

* Wassily Kandinsky's painting "Upward"

* "Un chien Andalou", directed by Luis Bunuel and cowritten by Salvador Dali

* "The Cocoanuts", the first film of the Marx Brothers

* the first "Silly Symphony" cartoons, including "The Skeleton Dance".

Not a bad year at all!