The heroes of these stories are known to readers of the High School Boys Series. In this new series Tom Reade and Harry Hazelton prove worthy of all the traditions of Dick & Co.

1 THE YOUNG ENGINEERS IN COLORADO; Or, At Railroad Building in Earnest.

2 THE YOUNG ENGINEERS IN ARIZONA; Or, Laying Tracks on the "Man-Killer" Quicksand.

3 THE YOUNG ENGINEERS IN NEVADA; Or, Seeking Fortune on the Turn of a Pick.

4 THE YOUNG ENGINEERS IN MEXICO; Or, Fighting the Mine Swindlers.

Cloth, Illustrated Price, per Volume, 50c.