Mary Pope Osborne
wrote Magic Tree House® Merlin Mission Pack (#29–#49)
comprising pages back in 2015.
Textbook and eTextbook are published under ISBN 0545856639 and 9780545856638.
Since then Magic Tree House® Merlin Mission Pack (#29–#49) textbook
was available to sell back to BooksRun online for the top buyback price
of $ 20.82 or rent at the marketplace.