The Natural Speller: Higher Grades(Early Middle School)/Google Books

There is no mention of grade, but it looks to be a speller for grades fifth through six, possibly through seventh grade.

Title The Natural Speller: Higher Grades
Authors Augustus Hill Kelley, Herbert Leonard Morse
Publisher C. Scribner's Sons, 1912
Length 153 pages

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McGuffey Spellers/Project Gutenberg

Primer through grade 12. See An Old Fashioned Education for a grade-by-grade guide for these books.

Champion Spelling Book/Google Books

Champion Spelling Book: For Public and Private Schools

By Warren Edwin Hicks

Published by American book company, 1909

238 pages

I believe this is for grades one - six, a section a grade.

Main page
Begin reading here.

The Practical Speller for Higher Grades/Google Books

The Practical Speller for Higher Grades: Designed to Present in the Natural Order of Acquisition the Words Required in the Work of the Grammar and High School, and to Lead the Pupil to a Clear Understanding of the Common Usage of Capital Letters and of Punctuation Marks, by William Clayton Jacobs, Published by Ginn & Co., 1900.

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Junior High School Speller/Google Books

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New-World Spellers/Google Books

Nicely illustrated with inspirational quotes heading up each chapter.

Grades one and two 1910 edition .

Grades three, four, and five 1915 edition.

Book two: grades four, five, and six 1917 edition.

Book three: seventh, eighth grade, and advanced work 1917 edition.

Sixth, seventh, and eight grades 1912 edition.

Noah Webster's American Spelling Book/19th Century Books

The American spelling book : containing the rudiments of the English language : for the use of schools in the United States / by Noah Webster.
Very thorough multi-grade spelling book which looks as if it could be used in sections from elementary through early middle school. It would also be useful for review and remediation for older students.

Free Spelling Course, Grades 6-8

Click on title.