This great resource was written by Alexander H. McGuffey (brother of William McGuffey). It is called “Progressive” because it begins with basic phonics, progresses to syllable rules, and leads to advanced vocabulary worthy of a graduate student. Therefore, it is the only spelling book you will ever need.
The Original McGuffey's Readers - Eclectic Progressive Speller
Publisher: Mott Media
Format: Hardcover Book
Author: Alexander McGuffey
Grade: 1, 2, 3, 4, 5, 6, 7, 8
Topic: Writing/Language Arts - Spelling