On 4/3/07, peter green plugwash@p10link.net wrote:
but how do you know that those books don't contain extracts from other copyright works that *have* been renewed?
This is the problem with the "PD" movies you sometimes see circulating on the net.. The movie lost its copyright (through lack of registration, lack of renewal, etc) but it contains music, photographs, and an underlying story which were all renewed and are still enforceable and enforced.