11 books in series
Magic Tree House Fact Tracker
Magic Tree House Fact Tracker is a 10-book series with 10 primary works first released in 2001 with contributions by Will Osborne, Mary Pope Osborne, and Natalie Pope Boyce.
#3FirstPublished
2001 • 1 Reader • 119 pages
#15
2007 • 1 Reader • 128 pages • 3
#18MostPopular
2008 • 2 Readers • 128 pages • 5
#21
2010 • 1 Reader • 115 pages • 3