Magic Tree House #16: Hour of the Olympics (A Stepping Stone Book(TM)) / 394冊目
「Magic Tree House #17: Tonight on the Titanic (A Stepping Stone Book(TM)) / 395冊目」
「Magic Tree House #15: Viking Ships at Sunrise (A Stepping Stone Book(TM)) / 393冊目」
「Magic Tree House #17: Tonight on the Titanic (A Stepping Stone Book(TM)) / 395冊目」
「Magic Tree House #15: Viking Ships at Sunrise (A Stepping Stone Book(TM)) / 393冊目」