Leonardo da Vinci :：a nonfiction companion to Magic Tree House #38: Monday with a mad genius / Leonardo da Vinci：a nonfiction companion to Monday with a mad genius Dog heroes :：a nonfiction companion to Magic tree house#46: Dogs in the dead of night / Ninjas and samurai :：a nonfiction companion to Magic tree house #5 : Night of the ninjas / Benjamin Franklin :: a nonfiction companion to Magic Tree House #32 : To the future, Ben Franklin! / Wild west :: a nonfiction companion to magic tree house #10, Ghost town at sundown / Dog heroes：a nonfiction companion to Magic tree house #46: Dogs in the dead of night Rain forests :：A nonfiction companion to magic tree house #6, Afternoon on the Amazon / Warriors：a nonfiction companion to Magic tree house #31: Warriors in Winter Abraham Lincoln：A nonfiction companion to Magic tree house, #47: Abe Lincoln at last!