RALPH ON THE ENGINE;
Or, The Young Fireman of the Limited Mail.
RALPH ON THE OVERLAND EXPRESS;
Or, The Trials and Triumphs of a Young Engineer.
RALPH, THE TRAIN DISPATCHER;
Or, the Mystery of the Pay Car.
RALPH ON THE ARMY TRAIN;
Or, The Young Railroader's Most Daring Exploit.
RALPH ON THE MIDNIGHT FLYER;
Or, The Wreck at Shadow Valley.
RALPH AND THE MISSING MAIL POUCH;
Or, The Stolen Government Bonds.
THE RIDDLE CLUB BOOKS By ALICE DALE HARDY
Individual Colored Wrappers. Attractively Illustrated. Every Volume Complete in Itself.
Here is as ingenious a series of books for little folks as has ever appeared since "Alice in Wonderland." The idea of the Riddle books is a little group of children—three girls and three boys decide to form a riddle club. Each book is full of the adventures and doings of these six youngsters, but as an added attraction each book is filled with a lot of the best riddles you ever heard.
THE RIDDLE CLUB AT HOME