I'm not doing the puzzle at all so don't really know what you're after, but I can think of a hint for Silk and Thread and that would be 'The other type is good to find in one's garden.'
No, ontarioice, it doesn't seem to be that - not really the sort of thinkg Whitaker's covers.
Doog, I'm not sure I understand your reply - "some of the postings you make" - that was my first post for many months; you seem to be implying that I've been asking for all the answers.
Anyway, I have the answers to two of the ones you have asked about, and all but four of the rest of the quiz, so I am happy to do some answer swapping if it is considered OK here.