Question: Which author of the series "My America", is also the author of the series "Magic Tree House"?
Context: Songs from The Tree House is a 1995 album by Canadian singer and songwriter Martha Johnson.  It was released through Muffin Music and was produced by Johnson and Mark Gane.  "Songs from The Tree House" won a Juno Award for "Best Children's Album" in 1997. Mary Pope Osborne (born May 20, 1949) is an American author of children's books.  She is best known for the award-winning and bestselling "Magic Tree House" series, which has been translated into more than 33 languages and has sold more than 135 million copies worldwide.  Mary Pope Osborne is an ardent advocate and supporter of children’s literacy, and the award-winning author of more than 100 books for children and young adults, including novels, retellings of mythology and folklore, picture books, biographies, and mysteries.  Ms. Osborne is also the coauthor of the companion Magic Tree House Fact Trackers series with her husband, Will Osborne, and her sister, Natalie Pope Boyce. Salvatore "Sal" Murdocca (born April 26, 1943) is an American children's book illustrator.  He is best known as Sal Murdocca, illustrator of the Magic Tree House series written by Mary Pope Osborne (from 1992) and the nonfiction "Magic Tree House Fact Checkers" by Osborne and collaborators (from 2000)—about 50 and 30 volumes respectively to 2014. Magic Tree House (マジック・ツリーハウス ) is a 2011 Japanese anime drama film based on the American children fantasy series of the same name by Mary Pope Osborne.  The film is directed by Hiroshi Nishikiori, and the film's screenplay was adapted from the Japanese version of the novel series "Magic Tree House" by Ichiro Okouchi.  The film stars actress Keiko Kitagawa as Jack, and also stars child actress Mana Ashida as Annie. Apple Tree House is a television drama series produced by CBeebies for children under age 11.  It is set on the fictitious Apple Tree House estate in London, and filmed in Bromley-by-Bow.  About a third of the population of this part of London is of Bangladeshi origin. Danger in the Darkest Hour was written by Mary Pope Osborne and illustrated by Sal Murdocca and published by Random House in 2015.  The book is dedicated to Osborne's father, Colonel William P. Pope, who fought in the Second World War.  It is the first Super Edition of the Magic Tree House Series. Tree House or Treehouse is a children's music album which was recorded in 1987 by Dutch-Australian musician Franciscus Henri backed by The Lightning Creek Band.  It was released in 1988 by ABC Records (ABC for Kids) and distributed by Pickwick Music on 33 rpm vinyl record, cassette and CD.  The Lightning Creek Band's Scott Browne wrote nine of the tracks and arranged five traditional songs.  "Tree House" was re-issued in 2007 on FHP Records under the name Mr Whiskers and The Lightning Creek Band.  Mr Whiskers is Henri's alter-ego. My America is a series of fictional diaries of children that take place during significant moments in American history.  Created by Scholastic, it is a spin-off of the series, "Dear America", geared toward younger children (grades 3-5).  The series covers: Jamestown, the American Revolution, the American Civil War, Westward Expansion, Underground Railroad, and slavery.  Each topic has three books and is authored by a different writer.  Writers include well respected and popular children's authors, such as Mary Pope Osborne of Magic Tree House fame.  The series was discontinued in 2004, but the books continue to be a popular teaching device for introducing American history to elementary school age children. The Magic Tree House is an American series of children's books written by American author Mary Pope Osborne.  The original American series is illustrated by Salvatore Murdocca, although other illustrators have been used for foreign-language editions. The Magic Tree (Polish: "Magiczne drzewo" , pronounced ] ) is an International Emmy Award-winning Polish-produced television series that ran from 2004 to 2006 on Telewizja Polska.  The live-action children's program was directed by Andrzej Maleszka.  A movie continuation under the same title was produced in 2009.  There's also book series, which contains six books: Czerwone Krzesło (Red Chair), Tajemnica Mostu (Mystery of Bridge), Olbrzym (Giant), Pojedynek (Duel), Gra (Game) and currently last, Cień Smoka (Shadow of Dragon).
Answer: Mary Pope Osborne