Magic tree House 10 books

Fantasy for children ages 5-8.
In 2017 the Merlin Missions were republished as an independent series with new numbering. What was book #29 “Christmas in Camelot” is now #1 of the Merlin Missions and so forth.
In 2017 a new book 29 “Big Day for Baseball” was published under the Magic Tree House series. To avoid confusion all Merlin Mission books have been moved to a new list. see Merlin Missions”