While on the topic of copyright, if I may ask, what makes Twain's works/notebooks/letters/misc published AFTER 1923 subject to copyright? While I have a general sense of the answer I am still confused how they have a copyright beyond the standard 70 years after the author's death. As for his works after 1923, what remains of their copyright? Is it specific to each document? I always had a sense that copyright began with the creation of a work not its date of publication. Alex Effgen Boston University