This is a group of five softcover books. The titles include;

#1 The Lightning Thief - 2006 - 377 p.

#2 The Sea of Monsters - 2006 - 279 p.

#3 The Titan's Curse - 2007 - 312 p.

#4 The Battle of the Labyrinth - 2008 - 361 p.

#5 The Last Olympian - 2009 - 381 p.

All in great condition, pages are tight and clean. Buyer pays $6.50 media mail shipping.