- Books with a time in the title — Midnight, dawn, or any time of day counts, but "time" itself doesn't. So The 6:41 to Paris and Breaking Dawn both count, but A Wrinkle in Time doesn't.
- Authors whose name ends with a vowel — Pretty easy to figure out: if the author's last name (or only name, for people like Questlove) ends in A, E, I, O, U, or Y, it counts.
Questions? Ask Kara or Regan.