Well, that seems to have been a minor waste of time...
Having fiddled with umpteen entries to ensure some reasonable quality in the database entries, I learn that the library is to be expurgated of all books that are not life+70yrs compliant...
I'm putting the project on hold until that process is done with.
I'm not really complaining; I have no more liking for being sued to smithereens than the next man, but I do insist on my right to be slightly self-centerdly grumpy and depressed about it...