Semi-mysterious J.D. Salinger Boxed Set mystery deepens, perhaps

Re: the semi-mysterious J.D. Salinger Boxed Set: I called Little, Brown’s Customer Service number yesterday morning to ask the simplest question: how many volumes? The person on the other end looked up the boxed set and found no answer (and sounded puzzled about that). She took my number and promised to get back to me. No one has returned my call.

So the mystery deepens, perhaps.