O - The Old Buzzard Had It Coming (Donis Casey)
P - Pale Fire by Vladimir Nabokov
Q - Q & A (Vikas Swarup)
R - Red Velvet Cupcake Murder - Joanne Fluke
S - The Secret Life of Walter Mitty (James Thurber)
T - Tempest in a Teapot (Amanda Cooper)
U - “USA” trilogy by John Dos Passos
V - The Vow on the Heron (Jean Plaidy)
W - The Wolfen (Whitley Strieber)
X - X-ray: The Unauthorized Autobiography (Ray Davies)
Y - Yukon Ho! (Bill Watterson)
Z - Zookeeper’s Wife (Diane Ackerman)
A - Anathem (Stephen Donaldson)
B - Beyond Good and Evil (Friedrich Nietzsche)
C - Catch-22 (Joseph Heller)
Huh, I would have expected an X repeat first 
D - Day of the Locust by Nathanael West
E - Erewhon (Samuel Butler)
F - Fathers and Sons by Ivan Turgenev
G - Good Omens (Neil Gaiman and Terry Pratchett)