<P> The series consists of two groups . The first group consists of books 1 - 28, in which Morgan Le Fay sends Jack and Annie Smith, two normal children who are siblings from the fictional small town of Frog Creek, Pennsylvania, on numerous adventures and missions with a magical tree house . The second group, referred to as the Magic Tree House "Merlin Missions," begins with book 29, Christmas in Camelot . In the Merlin Missions, Jack and Annie have quests from the ancient wizard Merlin the Magician . These books are longer than the previous 28, and some take place in fantasy realms like Camelot . Kathleen and Teddy are two apprentices who befriend Jack and Annie during their adventures, with one of these adventures being to free Teddy from a spell . The two occasionally join Jack and Annie, and, when they don't, provide them support instead . During Super Edition #1, Teddy sends them on a mission instead of Morgan or Merlin . The companion "Magic Tree House Fact Trackers" are co-written by Mary Pope Osborne with her husband Will Osborne or her sister Natalie Pope Boyce . </P> <P> Magic Tree House Books are for Beginning Chapter Book Readers . Adventures with Jack and Annie, for readers ages 6--9 who are just starting to read chapter books . </P> <Table> <Tr> <Th> #</Th> <Th> Title </Th> <Th> Published </Th> <Th> Story Arc </Th> <Th> Place Origin </Th> <Th> Plot Summary / Notes </Th> </Tr> <Tr> <Td> </Td> <Td> Dinosaurs Before Dark (UK Title: Valley of the Dinosaurs) </Td> <Td> 000000001992 - 07 - 28 - 0000 July 28, 1992 </Td> <Td> In the mystery of the Treehouse #1 </Td> <Td> Jack and Annie discover the tree house and, using the magical books there, they travel back to the late Cretaceous period (65 million years ago) where they meet a Pteranodon that saves them from a Tyrannosaurus rex . Jack finds a gold medallion with the letter "M" on it . Companion book: #1, Dinosaurs . </Td> </Tr> <Tr> <Td> </Td> <Td> The Knight at Dawn (UK title: Castle of Mystery) </Td> <Td> 000000001993 - 02 - 16 - 0000 February 16, 1993 </Td> <Td> In the mystery of the Tree house #2 </Td> <Td> In England during the Middle Ages, Jack and Annie explore a castle and meet a brave knight . Companion book: #2, Knights and Castles . </Td> </Tr> <Tr> <Td> </Td> <Td> Mummies in the Morning (UK title: Secret of the Pyramid) </Td> <Td> 000000001993 - 08 - 24 - 0000 August 24, 1993 </Td> <Td> In the mystery of the Tree house #3 </Td> <Td> In Ancient Egypt, Jack and Annie help Queen Hutepi find her missing Book of the Dead . Companion book: #3, Mummies and Pyramids . </Td> </Tr> <Tr> <Td> </Td> <Td> Pirates Past Noon (UK title: Pirates' Treasure!) </Td> <Td> 000000001994 - 03 - 08 - 0000 March 8, 1994 </Td> <Td> In the mystery of the Tree house #4 </Td> <Td> Jack and Annie encounter some pirates in the Caribbean Sea and meet Morgan le Fay, who turns out to be the mysterious "M". Companion book: #4, Pirates . </Td> </Tr> <Tr> <Td> 5 </Td> <Td> Night of the Ninjas </Td> <Td> 000000001995 - 03 - 21 - 0000 March 21, 1995 </Td> <Td> In the mystery of the Magic spell #1 </Td> <Td> Morgan le Fay is under a spell . Jack and Annie must find four magical objects to reverse the spell, with the help of a mouse named Peanut . In ancient Japan, Jack and Annie encounter ninjas and samurai and get a moonstone . Companion book: #30, Ninjas and Samurai . </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Afternoon on the Amazon (UK title: Adventure on the Amazon) </Td> <Td> 000000001995 - 08 - 29 - 0000 August 29, 1995 </Td> <Td> In the mystery of the Magic spell #2 </Td> <Td> Jack and Annie search the Amazon rainforest for a second magical object for Morgan le Fay, which turns out to be a mango . Companion book: #5, Rain Forests . </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Sunset of the Sabertooth (UK title: Mammoth to the Rescue) </Td> <Td> 000000001996 - 04 - 14 - 0000 April 14, 1996 </Td> <Td> In the mystery of the Magic spell #3 </Td> <Td> In the last Ice Age, Jack and Annie encounter Cro - Magnons, wooly mammoths, and a saber - toothed cat while looking for the third object to help Morgan - a mammoth bone flute . Companion book: #12, Sabertooths and the Ice Age . </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Midnight on the Moon (UK title: Moon Mission) </Td> <Td> 000000001996 - 10 - 29 - 0000 October 29, 1996 </Td> <Td> In the mystery of the Magic spell #4 </Td> <Td> Thirty - five years into their future (2031), Jack and Annie travel to the moon to look for the fourth object needed to help Morgan le Fay . Companion book: #6, Space . </Td> </Tr> <Tr> <Td> 9 </Td> <Td> Dolphins at Daybreak (UK title: Diving with Dolphins) </Td> <Td> 000000001997 - 04 - 29 - 0000 April 29, 1997 </Td> <Td> In the mystery of the Ancient riddles #1 in </Td> <Td> Set in the Pacific Ocean with bottlenose dolphins . Companion book: #9, Dolphins and Sharks . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Ghost Town at Sundown (UK title: A Wild West Ride) </Td> <Td> 000000001997 - 09 - 16 - 0000 September 16, 1997 </Td> <Td> In the mystery of the Ancient riddles #2 </Td> <Td> Set in the American Wild West, where Jack and Annie meet a cowboy named Slim . Companion book: #38, Wild West . </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Lions at Lunchtime (UK title: Lions on the Loose) </Td> <Td> 000000001998 - 02 - 12 - 0000 February 12, 1998 </Td> <Td> In the mystery of the Ancient riddles #3 </Td> <Td> Jack and Annie are on a mission on the African Savannah . </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Polar Bears Past Bedtime (UK title: Icy Escape) </Td> <Td> 000000001998 - 04 - 24 - 0000 April 24, 1998 </Td> <Td> In the mystery of the Ancient riddles #4 </Td> <Td> Set in the North Pole, Jack and Annie meet an Inuit . Companion book: #16, Polar Bears and the Arctic . </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Vacation Under The Volcano (UK title: Racing with Gladiators) </Td> <Td> 000000001998 - 06 - 20 - 0000 June 20, 1998 </Td> <Td> In the mystery of the Lost stories #1 </Td> <Td> Jack and Annie travel to Pompeii on the eve of the eruption of Mt . Vesuvius . Companion book: #14: Ancient Rome and Pompeii . </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Day of the Dragon King (UK title: Palace of the Dragon King) </Td> <Td> 000000001998 - 08 - 11 - 0000 August 11, 1998 </Td> <Td> In the mystery of the Lost stories #2 </Td> <Td> Jack and Annie travel to China as it was 2,000 years in their past . The Dragon King is also known as Emperor Qin . Companion book: #31, China: Land of the Emperor's Great Wall . </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Viking Ships at Sunrise (UK title: Voyage of the Vikings) </Td> <Td> 000000001998 - 10 - 20 - 0000 October 20, 1998 </Td> <Td> In the mystery of the Lost stories #3 </Td> <Td> In medieval Ireland, Jack and Annie encounter Vikings . Companion book: #33, Vikings . </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Hour of the Olympics (UK title: Olympic Challenge!) </Td> <Td> 000000001998 - 12 - 17 - 0000 December 17, 1998 </Td> <Td> In the mystery of the Lost stories #4 </Td> <Td> Jack and Annie travel to Ancient Greece and see the first Olympic games . Companion book: #10, Ancient Greece and the Olympics . </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Tonight on the Titanic </Td> <Td> 000000001999 - 03 - 23 - 0000 March 23, 1999 </Td> <Td> In the mystery of the Enchanted dog arc #1 </Td> <Td> Jack and Annie travel back to 1912 and are on the RMS Titanic during her fateful voyage . In this arc the two are assisted by a dog named Teddy that they must find gifts to free . Companion book: #7, Titanic . </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Buffalo Before Breakfast </Td> <Td> 000000001999 - 05 - 18 - 0000 May 18, 1999 </Td> <Td> In the mystery of the Enchanted dog arc #2 </Td> <Td> In the American Old West, Jack and Annie encounter a Lakota boy on the Great Plains . </Td> </Tr> <Tr> <Td> 19 </Td> <Td> Tigers at Twilight </Td> <Td> 000000001999 - 08 - 17 - 0000 August 17, 1999 </Td> <Td> In the mystery of the Enchanted dog arc #3 </Td> <Td> Jack and Annie explore the Indian jungles of the past . </Td> </Tr> <Tr> <Td> 20 </Td> <Td> Dingoes at Dinnertime </Td> <Td> 000000002000 - 03 - 14 - 0000 March 14, 2000 </Td> <Td> In the mystery of the Enchanted dog arc #4 </Td> <Td> Set in Australian Outback . Jack and Annie receive the final gift and return home where Morgan removes the spell on the dog who is revealed to be a boy named Teddy, a young magician who trapped himself under a spell causing him to become a dog . </Td> </Tr> <Tr> <Td> 21 </Td> <Td> Civil War on Sunday </Td> <Td> 000000002000 - 05 - 23 - 0000 May 23, 2000 </Td> <Td> In the Morgan's library arc #1 </Td> <Td> In the American Civil War, Jack and Annie encounter Clara Barton . </Td> </Tr> <Tr> <Td> 22 </Td> <Td> Revolutionary War on Wednesday </Td> <Td> 000000002000 - 09 - 26 - 0000 September 26, 2000 </Td> <Td> In the Morgan's library arc #2 </Td> <Td> Jack and Annie cross the Delaware River with George Washington . Companion book: #11, American Revolution . </Td> </Tr> <Tr> <Td> 23 </Td> <Td> Twister on Tuesday </Td> <Td> 000000002001 - 03 - 27 - 0000 March 27, 2001 </Td> <Td> In the Morgan's library arc #3 </Td> <Td> In the 1870s, Jack and Annie encounter pioneer settlement of the Midwestern prairie . They have to save a teacher and some kids before they are hit by a tornado . Companion book: #8, Twisters and Other Terrible Storms . </Td> </Tr> <Tr> <Td> 24 </Td> <Td> Earthquake in the Early Morning </Td> <Td> 000000002001 - 08 - 24 - 0000 August 24, 2001 </Td> <Td> In the Morgan's library arc #4 </Td> <Td> In 1906, Jack and Annie experience the San Francisco earthquake . The two are able to use what they find to inspire King Arthur to battle Mordred, although in a later book it is shown that he wins without dying in these stories . </Td> </Tr> <Tr> <Td> 25 </Td> <Td> Stage Fright on a Summer Night </Td> <Td> 000000002002 - 03 - 12 - 0000 March 12, 2002 </Td> <Td> In the Type of magic arc #1 </Td> <Td> In Elizabethan England, Jack and Annie meet William Shakespeare </Td> </Tr> <Tr> <Td> 26 </Td> <Td> Good Morning Gorillas </Td> <Td> 000000002002 - 08 - 23 - 0000 August 23, 2002 </Td> <Td> In the Type of magic arc #2 </Td> <Td> In the Congo rainforest, Jack and Annie encounter gorillas . </Td> </Tr> <Tr> <Td> 27 </Td> <Td> Thanksgiving on Thursday </Td> <Td> 000000002002 - 10 - 24 - 0000 October 24, 2002 </Td> <Td> In the Type of magic arc #3 </Td> <Td> In Plymouth in 1621, Jack and Annie share the first Thanksgiving with the Pilgrims and Wampanoag Indians . Companion book: #13, Pilgrims . </Td> </Tr> <Tr> <Td> 28 </Td> <Td> High Tide in Hawaii </Td> <Td> 000000002003 - 03 - 25 - 0000 March 25, 2003 </Td> <Td> In the Type of magic arc #4 </Td> <Td> Jack and Annie travel to the Hawaii of the past and almost get caught in a tsunami . They also make two friends who share an adventure with them . Companion book: #15, Tsunamis and Other Natural Disasters . </Td> </Tr> <Tr> <Td> 29 </Td> <Td> A Big Day For Baseball </Td> <Td> 000000002017 - 08 - 01 - 0000 August 1, 2017 </Td> <Td> </Td> <Td> Jack & Annie are whisked back to Brooklyn's Ebbets Field on April 15, 1947, to witness Jackie Robinson's Major League debut . Companion book: #37, Baseball . </Td> </Tr> <Tr> <Td> 30 </Td> <Td> Hurricane Heroes in Texas </Td> <Td> 000000002018 - 08 - 07 - 0000 August 7, 2018 </Td> <Td> </Td> <Td> Jack and Annie are on a mission! When the magic tree house whisks them back to Galveston, Texas, in 1900, they find out that a big storm is coming . But even though there is rain and wind, no one believes there is any danger . As the storm grows, seawater floods the city . Now everyone needs help! Jack and Annie have a little bit of magic and a lot of hope--but will it be enough? </Td> </Tr> </Table> <Tr> <Th> #</Th> <Th> Title </Th> <Th> Published </Th> <Th> Story Arc </Th> <Th> Place Origin </Th> <Th> Plot Summary / Notes </Th> </Tr>

When did the first magic tree house book come out