Warriors: A nonfiction companion to Magic Tree House #31: Warriors in Winter (Magic Tree House Fact Tracker)
(Fact Trackers (Companions) #40)
written by Mary Pope Osborne and Natalie Pope Boyce with illustrations by Isidre Mones

• Publication Date: January 8, 2019
• Genres: Children's, Children's 7-10, Children's Nonfiction, History, Military, Nonfiction, World History
• Paperback: 128 pages
• Publisher: Random House Books for Young Readers
• ISBN-10: 1101936517
• ISBN-13: 9781101936511