Mary Pope Osborne is an American author of children's books and an audiobook narrator, best known for the Magic Tree House series, which had sold more than 134 million copies worldwide as of 2017. The series follows Jack and Annie through time, from the age of dinosaurs in Dinosaurs Before Dark to King Arthur's Camelot in The Knight at Dawn. Osborne, who attended the University of North Carolina, published her first book in 1982 and started the series in 1992, and she has also written biographies, mysteries, picture books and retellings of fairy tales and world myths.
