McGuffey's Eclectic Spelling Book… (1879)
“ In revising this book, care has been taken to preserve all the excellences that have so long and so favorably distinguished McGUFFEY'S ECLECTIC SPELLING-BOOK: and the chief changes that have been made, have been suggested by the evident plan of the original work.The old system of indicating the pronunciation by numerals, called "superiors," has been abandoned, and the diacritical marks used by Webster have been adopted. ”
