From Washington the scene is shifted to the great oil fields of our country. A splendid picture of the oil field operations of today.

4. BETTY GORDON AT BOARDING SCHOOL
or The Treasure of Indian Chasm

An up-to-date tale of school life. Betty made many friends, but a jealous girl tried to harm her. Seeking the treasure of Indian Chasm makes an exceedingly interesting incident.

5. BETTY GORDON AT MOUNTAIN CAMP
or The Mystery of Ida Bellethorne

At Mountain Camp in mid-winter Betty Gordon found herself in the midst of a mystery involving a girl whom she had previously met in Washington.

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CUPPLES & LEON COMPANY, Publishers New York

THE RUTH FIELDING SERIES