However now the General Agreement on Trade and Tariffs (GATT) & its successor the World
Trade Organisation requires countries to respect each other's copyrights,
so copyright works formerly in the public domain in the U.S. should have their copyright restored.
As of 1998 the US has at last passed a Digital Millenium Copyright Act which is supposed to ratify
1996 World Intellectual Property Organisation treaties relating to copyright.
Meanwhile a major charity for sick children is losing out on royalties.