01065cam a2200337 4500 242181176 TxAuBib 20120615120000.0 120615|||||||||||||||||||||||||||||eng|u 2003010248 9780375927355 0375927352 MPL MPL TxAuBib Osborne, Mary Pope. Summer of the Sea Serpent. Random House Childrens Books, 3/1/2004. Hardcover : 111 pgs. Magic Tree House ; 31 Jack and Annie travel in their magic tree house to the land of the mystical selkies to seek a magical sword for Merlin. 3-6. Juvenile Fiction. Time travel; Fiction. Magic; Fiction. Selkies; Fiction. Swords; Fiction. Tree houses; Fiction. Brothers and sisters; Fiction. Action and Adventure. Murdocca, Sal. Magic Tree House ; 31.