There are 2 series with the name: Magic Tree House
Magic Tree House Books in Order
Books by Mary Pope Osborne and Others1. Dinosaurs Before Dark (2012)
2. The Knight at Dawn (1993)
3. Mummies in the Morning (2014)
4. Pirates Past Noon (1994)
5. Night of the Ninjas (1995)
6. Afternoon on the Amazon (1995)
7. Midnight on the Moon (1996)
8. Dolphins at Daybreak (1997)
9. Ghost Town at Sundown (1997)
10. Lions at Lunchtime (1998)
11. Polar Bears Past Bedtime (1998)
12. Vacation Under the Volcano (1998)
13. Day of the Dragon King (1998)
14. Viking Ships at Sunrise (1998)
15. Hour of the Olympics (1998)
16. Tonight on the Titanic (1999)
17. Buffalo Before Breakfast (1999)
18. Tigers at Twilight (1999)
19. Dingoes at Dinnertime (2000)
20. Civil War on Sunday (2000)
21. Revolutionary War on Wednesday (2000)
22. Twister on Tuesday (2001)
23. Earthquake in the Early Morning (2001)
24. Stage Fright on a Summer Night (2002)
25. Good Morning, Gorillas (2002)
26. Thanksgiving on Thursday (2002)
27. High Tide in Hawaii (2003)
28. A Big Day for Baseball Book 29) (2017)
29. Hurricane Heroes in Texas Book 30) (2018)
30. Warriors in Winter Book 31) (2019)
31. To the Future, Ben Franklin! Book 32) (2019)
32. Narwhal on a Sunny Night Book 33) (2020)
33. Late Lunch with Llamas Book 34) (2020)
34. Camp Time in California Book 35) (2021)
35. Sunlight on the Snow Leopard Book 36) (2022)
Magic Tree House Boxed Sets Books in Order
Books by Mary Pope Osborne7. Magic Tree House Books 25-28 Boxed Set ) (2016)