I found it this morning. On Valentine's Day! :)
Part of it reads:
"I just wanted to tell you that I was disappointed (after the initial surprise wore off) that you were unable to find a printer for your latest mystery and short stories. Solely because of this, I’ve just purchased a Kindle and naturally, all of the e-books and stories from Amazon that I didn’t already own of yours on paper. I bet I’m not the only one who has done so out of love for your work!"
Actually, that was the first time that my books actually promoted Kindle. I really wish they'd show some appreciation.
Meanwhile, I've got that warm, fuzzy feeling that maybe all is not lost.