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      BILLY TO-MORROW -- illustrated by Charles M. Relyea. 1909.
        McClurg.
 
BILLY TO-MORROW IN CAMP -- illustrated by H.S. DeLay. 1910.
        McClurg.
 
BILLY TO-MORROW STANDS THE TEST -- 1911. McClurg.
 
BILLY TO-MORROW'S CHUMS -- "His
        pal Sidney introduces Billy To-Morrow to Max, a young violinist trying
        to live down his past as a thief." -- illustrated by Robert
        J. Davison. 1913. A.C. McClurg & Co. 
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