| THE GRAMMAR SCHOOL BOYS SERIES | |
| Notes | Titles | 
| "This series of stories,
    based on the actual doings of grammar school boys comes near to the heart of
    the average American boy." --- Altemus advertisement This "prequel" series was published after the "High School Boys" books, and covers earlier adventures of the boys featured in that series. Publishing info may be incomplete. | 
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| Source: Altemus advertisement in Grace Harlowe's Junior Year in High School WorldCat Holdings |