Rain forests :：A nonfiction companion to magic tree house #6, Afternoon on the Amazon / A nonfiction companion to magic tree house #6, Afternoon on the Amazon / Rain forests：a nonfiction companion to Afternoon on the Amazon Space：a nonfiction companion to Magic tree house #8, Midnight on the moon Wild west :: a nonfiction companion to magic tree house #10, Ghost town at sundown / a nonfiction companion to Magic tree house #8, Midnight on the moon Dog heroes :：a nonfiction companion to Magic tree house#46: Dogs in the dead of night / Pirates :：A nonfiction companion to Magic Tree House #4, Pirates Past Noon / The other title：a nonfiction companion to Magic tree house #54, Balto of the Blue Dawn Dog heroes：a nonfiction companion to Magic tree house #46: Dogs in the dead of night