7 1 50 Ninjas and Samurai Mary Pope Osborne Primary Author Natalie Pope Boyce Primary Author mixed material 9780385386326 New York, NY, United States Random House 2014 dkjfkdskfjsldkfjklsjdlfkjlksdmf.%2Csmd.f%2Cm.s%2Cdmf.%2Cm.%2Cmxvxx.jpg.jpg Mary Pope Osborne Additional Author Natalie Pope Boyce Additional Author mixed material 9780375846632 USA Random House Books for Young Readers 2011 sea_monsters.jpg.jpg A Nonfiction Companion to Magic Tree House #16: Hour of the Olympics Mary Pope Osborne Additional Author Natalie Pope Boyce Additional Author Sal Murdocca Illustrator mixed material 9780375823787 New York, USA Random House Books for Young Readers (Penguin Random House imprint) 2004 ancient_greece.jpg.jpg A Nonfiction Companion to Magic Tree House #13: Vacation Under the Volcano Mary Pope Osborne Primary Author Natalie Pope Boyce Primary Author Sal Murdocca Illustrator mixed material 9780375832208 New York, USA Random House Books for Young Readers (Penguin Random House) 2006 81yew%2BApkwL._SL1500_.jpg.jpg Mary Pope Osborne Additional Author Natalie Pope Boyce Additional Author mixed material 9780375960109 Upper Saddle River, NJ Gramedia 2010 rags_and_riches.jpg.jpg Mary Pope Osborne Additional Author Natalie Pope Boyce Additional Author mixed material 9780385386296 Upper Saddle River, NJ Random House Children\'s Book 2014 soccer.jpg.jpg Mary Pope Osborne Additional Author Natalie Pope Boyce Additional Author mixed material 9780375860126 USA Random House 2011 dog_heroes.jpg.jpg