ProfChrisReed,
Thanks for clarifying those aspects of s30.
Perhaps you can answer a further question or two:
When a person writes a letter (as opposed to an article) to a periodical or newspaper for publication, who owns the copyright, the author or the publisher - or both?
If not the author, then would not (even) the entirety of the letter be considered to be only that part of the entire publication (the magazine) necessary to carry out the review?
And if it had been a very short letter, would we even be having this discussion?
FBW