Magic Tree House Super Edition #1: Danger in the Darkest Hour (A Stepping Stone Book(TM)) by Mary Pope Osborne and Sal Murdocca (6 Jan 2015)
- Available for pre-order. This item will be released on 6 January 2015.
Magic Tree House Fact Tracker #10: Ancient Greece and the Olympics: A Nonfiction Companion to Magic Tree House... by Mary Pope Osborne, Natalie Pope Boyce and Sal Murdocca (29 Feb 2012)
- Available for download now