"McGuffey's Eclectic Primer, Revised Edition" by William Holmes McGuffey is a graded textbook published between 1836-1837. Part of a revolutionary series of readers, it taught millions of American students to read using phonics, word repetition, and carefully selected literature. The books emphasized moral education, spelling, and public speaking, shaping the first mass-literate generation in America. From classrooms nationwide to homeschools today, these primers have sold over 120 million copies, standing alongside the Bible in influence and reach. (This is an automatically generated summary.)