What are the last books in The Chronicles of Narnia series?

The series in order of release:

• The Lion, the Witch and the Wardrobe
• Prince Caspian
• Voyage of the Dawn Treader
• The Silver Chair
• The Horse and His Boy
• The Magician's Nephew
• The Last Battle

The books go back and forth throughout the time line. The Last Battle was the last book by order of release as well as in the time line.