Merlin Missions
#29: CHRISTMAS IN CAMELOT
#30: HAUNTED CASTLE ON HALLOWS EVE
#31: SUMMER OF THE SEA SERPENT
#32: WINTER OF THE ICE WIZARD
#33: CARNIVAL AT CANDLELIGHT
#34: SEASON OF THE SANDSTORMS
#35: NIGHT OF THE NEW MAGICIANS
#36: BLIZZARD OF THE BLUE MOON
#37: DRAGON OF THE RED DAWN
#38: MONDAY WITH A MAD GENIUS
#39: DARK DAY IN THE DEEP SEA
#40: EVE OF THE EMPEROR PENGUIN
#41: MOONLIGHT ON THE MAGIC FLUTE
#42: A GOOD NIGHT FOR GHOSTS
#43: LEPRECHAUN IN LATE WINTER
#44: A GHOST TALE FOR CHRISTMAS TIME
Magic Tree House® Research Guides
DINOSAURS
KNIGHTS AND CASTLES
MUMMIES AND PYRAMIDS
PIRATES
RAIN FORESTS
TITANIC
TWISTERS AND OTHER TERRIBLE STORMS
DOLPHINS AND SHARKS
ANCIENT GREECE AND THE OLYMPICS
AMERICAN REVOLUTION
SABERTOOTHS AND THE ICE AGE
PILGRIMS
ANCIENT ROME AND POMPEII
TSUNAMIS AND OTHER NATURAL DISASTERS
POLAR BEARS AND THE ARCTIC
SEA MONSTERS
PENGUINS AND ANTARCTICA
LEONARDO DA VINCI
GHOSTS
LEPRECHAUNS AND IRISH FOLKLORE
RAGS AND RICHES: KIDS IN THE TIME OF CHARLES DICKENS
More Magic Tree House®
GAMES AND PUZZLES FROM THE TREE HOUSE