Monday with a Mad Genius (Magic Tree House, No. 38)
(Magic Tree House: Merlin Missions #10)
written by Mary Pope Osborne with illustrations by Sal Murdocca

• Publication Date: January 13, 2009
• Genres: Children's, Historical Fantasy
• Paperback: 144 pages
• Publisher: Random House Books for Young Readers
• ISBN-10: 0375837302
• ISBN-13: 9780375837302