Magic Tree House #43 is called Leprechaun in Late Winterand was released on January 12, 2010. It was available from most retail and online bookstores.
The next two books, #44, A Ghost Tale at Christmas Timeand #45 A Crazy Day With Cobras, have all been released. They are currently available from most retail and online bookstores and the books have been highly successful both commercially and critically.
Leprechaun in Late Winter is book 43
Jan 18,2009
In the Magic Tree House series by Mary Pope Osborne, book 43 is titled "Leprechaun in Late Winter." It follows Jack and Annie as they travel to Ireland to help a leprechaun find his gold.
It is called Leprechaun in Late Winter and was released on January 12, 2010.
Magic Tree House #43 is called Leprechauns at Late Winter. The book is about Jack and Annie, brother and sister, traveling to the Great House in Ireland to inspire Lady Augusta. With their friends, Teddy, a training wizard and a son a of a wood spirit, and Kathleen, a selkie, they succeed in helping Lady Augusta find her talents.
The newest Magic Tree House Book is Dogs In The Dead Of Night which is coming out in August 2011.---- As of for June 2011 the day I am writing this answer, the newest Magic Tree House book is book #45-A Crazy Day With Cobras.
Book number 40 of the Magic Tree House series was published on September 23, 2008. Book number 41 was published on March 10, 2009. Book number 42 was published on Jul 28, 2009. Book number 43 was published on January 12, 2010.
There is no Magic Tree House book with the number 42. The last book in the series is "Balto of the Blue Dawn" which is book 54. The release date for this book was January 5, 2016. You can find it on Amazon.com.
Yes, Mary Pope Osborne is still writing Magic Tree House books. The series has expanded to include not only the original chapter books but also nonfiction companion books and a spin-off series called Magic Tree House Merlin Missions.
Number 40 is called "Eve of the Emperor Penguin" and was published on September 23rd, 2008. Books 41 and 42 were released in 2009, and books 43 and 44 in 2010.
Number 41 is called Moonlight on the Magic Flute.Number 42 is called A Good Night for Ghosts.Number 43 is called Leprechaun in Late Winter.Number 44 is called A Ghost Tale for Christmas Time.I don't now what number 45 is called
Book 47 is called Abe Lincoln at Last. It is the third book in the series that Jack and Annie find the solution to Penny, a penguin that was turned to stone. It is scheduled to be published in the winter of 2012.