Book 6

Una Tarde en el Amazonas

by Mary Pope Osborne

Published 1 September 2004
Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in a tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles, and wild jaguars.

Book 7

The magic tree house transports Jack and Annie on a mission to the Ice Age where they encounter Cro-Magnons, cave bears, sabertooth tigers, and woolly mammoths.

Book 8

Medianoche en la luna

by Mary Pope Osborne

Published 1 September 2004
The magic treehouse takes Jack and Annie to a moon base in the future, where they continue to search for the fourth thing they need to free their friend Morgan from the magician's spell.

Book 10

Their magic tree house takes Jack and Annie back to the Wild West, where they experience excitement and danger and try to solve a riddle.

Book 12

Their magic tree house takes Jack and Annie to the Arctic, where a polar bear leads them onto very thin ice.

Book 12