Houghton Mifflin
The American Heritage系列
- First Dictionary
- Children's Dictionary
- Student Dictionary
- Children's Thesaurus
- Student Thesaurus
- Children's Science Dictionary
- Student Science Dictionary
- High School Dictionary
- College Thesaurus

工具書系列
- 100 Best Books for Children
- 500 Great Books for Teens

Scholastic
- Children's Dictionary
- Children's Thesaurus
- Children's Encyclopedia

The Americanb Heritage Dictionaries
同義字字典系列...
> Grade Level: Grades 3-6
> Hardcover / 288 Pages
> ISBN 978-0-618-70166-7
豐富的字彙定義和超過36000個同義字，幫助中/高年級的孩子選擇自己了解的同義字，用簡單的文字如何換句話說，靈活運用於自己的寫作上。

The Americanb Heritage Dictionaries
同義字字典系列...
> Grade Level: Grades 7-10
> Hardcover / 384 Pages
> ISBN 978-0-618-70170-4
Student's Thesaurus提供Gr.7-10的學生利用更廣泛的詞彙來尋求更有效的溝通方式，特色是超過70,000同義詞，提供了許多同義詞、例句，提高學生的閱讀和寫作能力。