So of course, I want to start with "A", and so forth.
Hours later, after emptying the old shelves of all of the full-size hardcovers, I have discovered that our most popular letters are: B (for Bujold, MZB, Dale Brown, and others), C (for Clancy, Coonts, Cussler, Bernard Cornwell, &c), W (David Weber, Wurtz, Williams, &c), M (McCaffrey, Moon, and I forget who else), and L (Lackey, L'amour, Lieber, &c).
All to fill three shelves in the hallway (which never got beyond the Bs).