Will Osborne

Titanic: A Nonfiction Companion to Magic Tree House #17: Tonight on the Titanic

By Mary Pope Osborne, Will Osborne, Sal Murdocca

Mummies and Pyramids: A Nonfiction Companion to Magic Tree House #3: Mummies in the Morning (Magic Tree House (R) Fact Tracker)

By Mary Pope Osborne, Will Osborne, Sal Murdocca, Osborne, Mary Pope, Will, Murdocca, Sal