The city of Ember / : Bk. 1 /
by Jeanne DuPrau.
- New York, NY : Random House, 2003.
- p. cm.
- Books of Ember:1 .
Summary: In the year 241, twelve-year-old Lina trades jobs on Assignment Day to be a messenger, to run to new places in her beloved but decaying city, perhaps even to glimpse Unknown Regions.