AUTHOR OF “THE RADIO DETECTIVES,” “THE RADIO DETECTIVES UNDER THE SEA,” “THE RADIO DETECTIVES SOUTHWARD BOUND,” ETC. I. Strange Places II. A Cry for Help III. The Castaways IV. More Mysteries V. The End of the Submarine VI. In South America VII. Off for the Jungle VIII. On the Trail IX. Kenaima! X. Red Beard Seals His Doom XI. Vengeance XII. The End of the Trail…
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