Jeanne DuPrau

The City of Ember
The Diamond Of Darkhold
The Diamond of Darkhold - Fourth Book of Ember (Disk 4 of 6)
The Diamond of Darkhold - Fourth Book of Ember (Disk 5 of 6)
The Diamond Of Darkhold [Disc 1]
The Diamond Of Darkhold [Disc 3]
The Diamond Of Darkhold [Disc 5]
The Diamond Of Darkhold [Disc 6]
The People of Sparks
The Prophet of Yonwood