Dear Mary: How can I make my friends read the book I gave them?

Q. I gave a copy of Dan Russel the Fox by Somerville and Ross to a couple I know to be very keen on hunting. It’s an out-of-print novel, hard to get hold of, and it cost quite a lot, but as I know it to be such a deeply enjoyable read, I thought it would be well worth the effort of getting it so I could give it to them when they kindly had me to dinner. Frustratingly, however, every time I run into this couple and ask what they thought of Dan Russel the Fox, they reply that they haven’t got round to reading it yet. It’s not an arduous read and, as I say, is deeply enjoyable. I realise they are free to do what they want with an unsolicited gift  but I can think of several other people I would like to give Dan Russel to. Can I suggest that if they don’t want to read it, I swap it for, say, a really nice gardening book or something else that they do want to read?
— S.T.,