The Magic Tree House adventures continue in books 9—12. Morgan the magical librarian of Camelot challenges Jack and Annie to discover the answers to four riddles as they travel under the sea to the Wild West, the African plains, and the frozen Arctic. If they succeed, they will become Master Librarians! Books in this set include:Dolphins at Daybreak (#9)Ghost Town at Sundown (#10) Lions at Lunchtime (#11) Polar Bears past Bedtime (#12) Magic Tree House Books #9—12.
Including books:
067988338X:Dolphins at Daybreak (Magic Tree House, No. 9)
0679883398:Magic Tree House #10: Ghost Town at Sundown
0679883401:Magic Tree House #11: Lions at Lunchtime
067988341X:Polar Bears Past Bedtime (Magic Tree House, No. 12)