Choose one of the following books. First come, first served.

Even Greater Mistakes (hb), signed by Charlie Jane Anders
The City in the Middle of the Night (hb), signed by Charlie Jane Anders
Never Say You Can't Survive (pb), signed by Charlie Jane Anders (2 available)
Apprehension, signed by Mary Robinette Kowal
The Martian Contingency, signed by Mary Robinette Kowal