この本は中級英語読み物「百万英語読書計画」シリーズの第一集の13つで、1500基本的な英語の語彙をマスターした読者に適している。
百万英語読書計画（Million-Word Reading Project，MWRP）は英語を第二言語または外国語として学ぶ者（ESL/EFL）に対する設計した英語読書向上計画である。読者は1500基本英語の語彙（初級英語相当）を習得した読者を対象に、2年、毎日約15分間の読書で中級英語のレベルに達し、3500語以上の単語と大量のフレーズをマスターし、英語の各構文を熟練にマスターし、一般英語の原典を読むことができる。
本文書の統計情報は下表を参照してください。選択時の参考になる。

可読性の値| 81.58
総文字数| 27145
新語件数 | 1392
新語率(%) | 5.13
新語重複率| 4.6
5回以上重複新語件数| 53
2回以上重複新語件数| 147

[内容概要]
Dorothy, an orphan, lives in a one-room house with her uncle and aunt. A tornado appears and Dorothy and her pet dog are carried away by the winds. Dorothy falls asleep as the house flies through the air.
When she awakens and goes outside her house, she finds she is in a strange and beautiful country, where there live small, strangely-dressed people known as the Munchkins. Dorothy's house has fallen on the Wicked Witch of the East, ruler of the Munchkins. The Good Witch of the North tells Dorothy to go to the Emerald City, ruled by the Wizard of Oz, in the hope that the Wizard may be able to help the little girl return home.
On her way to the Wizard's city, Dorothy makes three unusual friends: a scarecrow who complains of having no brains, a woodman made entirely of tin who complains of having no heart, and a lion who complains of having no courage. They go with Dorothy to see if the Wizard can help them....
This book is rewritten from "The Wonderful Wizard of Oz" by L. Frank Baum (1856–1919), American author of children's books. This story has been made into films a number of times.